Company lists · Data refreshed September 2026
Top 25 Electrical insulation manufacturers based in the United States
RevenueBase identified 195 company matches for electrical insulation manufacturers associated with the United States as of September 2026 and tracks 4,343 professional contacts across them, including 1,604 with verified work emails. Houston is the largest hub.
This list covers company matches for electrical insulation manufacturers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 16, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest electrical insulation manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 571 contacts → | ||||
Exact match “SPI is a global leader in the Distribution and Specialty Fabrication of insulation products for Thermal, Acoustic, Fire Protection and Refractory applications.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 2 | 477 contacts → | ||||
Exact match “The Okonite Company was founded in 1878 making it one of the original insulators of electrical wire and cable in the United States.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 3 | 398 contacts → | ||||
Exact match “At Unifrax, we provide innovative solutions to our customers' application problems across several different industries.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 4 | 208 contacts → | ||||
Exact match “NUTEC is a leading manufacturer of superior quality, high-temperature insulation and fire protection products.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 5 | 141 contacts → | ||||
Exact match “JM is the leading manufacturer of thermal insulation solutions for high and low-temperature industrial applications.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 6 | 133 contacts → | ||||
Exact match “K-FLEX USA is the North American division of the IK Insulation Group, an innovative leader in flexible elastomeric foam insulation with 12 production facilities worldwide and a…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 7 | 105 contacts → | ||||
Exact match “Enduro Composites is a vertically integrated manufacturer of FRP composites.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 8 | 93 contacts → | ||||
Exact match “MasterMold, LLC is a multi-site, Wisconsin based manufacturer.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 9 | 87 contacts → | ||||
Exact match “Epsilyte is one of North America’s leading producers of advanced insulative materials.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 10 | 85 contacts → | ||||
Exact match “PLENCO is a materials company advancing the systems that power industry.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 11 | 84 contacts → | ||||
Exact match “Jushi Group, headquartered in the Tongxiang Economic Development Zone, Zhejiang, China, is one of the world’s largest producers of fiberglass reinforcements.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 12 | 71 contacts → | ||||
Exact match “Founded in 1942, Bayou is widely recognized as a market leader in onshore pipe coatings and offshore coatings and insulation, including highly-specialized insulation for the oil &…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 13 | 69 contacts → | ||||
Exact match “Davlyn Group is a leading U.S-based manufacturer of technical textiles and composites for the industrial, commercial, and residential markets.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 14 | 63 contacts → | ||||
Exact match “Life Critical.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 15 | 53 contacts → | ||||
Exact match “Founded in 1958, The Nelson Companies is a family of independently operated specialty contracting businesses serving commercial, industrial, healthcare, education, manufacturing…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 16 | 51 contacts → | ||||
Exact match “Haysite Reinforced Plastics, located in Erie, PA, is among the worldwide leaders in the formulation and processing of thermoset composite materials.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 17 | 45 contacts → | ||||
Exact match “With fabricating facilities in New Jersey, North Carolina and Georgia, Pacor custom fabricates and distributes fiberglass, aerogel, ceramic and foam industrial insulation products…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 18 | 41 contacts → | ||||
Exact match “ODI is the premier insulation contractor in the commercial and industrial marketplace, specializing in mechanical insulation, low temperature refrigeration work, installation of…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 19 | 41 contacts → | ||||
Exact match “Janco Engineered Products manufactures a wide range of advanced composites.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 20 | 39 contacts → | ||||
Exact match “Insul-Therm Intl.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 21 | 36 contacts → | ||||
Exact match “Manufacturer's of INSULTECH Thermal Acoustic Blanket Insulation systems.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 22 | 36 contacts → | ||||
Exact match “TSG Resolute is the leading provider to the major OEM marketplaces for a wide range of products that includes gaskets, thermal insulation, acoustical insulation, electrical…” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 23 | 33 contacts → | ||||
Exact match “Over the past 25 years General Coatings Manufacturing Corp.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 24 | 33 contacts → | ||||
Exact match “NeoInsulation: Engineering superior insulation solutions with innovative applications for today's energy infrastructure.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
| 25 | 33 contacts → | ||||
Exact match “Gerome Technologies Inc.” Recorded in the RevenueBase company graph · Sep 16, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “electrical insulation manufacturers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 195 electrical insulation manufacturers based in the United States
See the full list, filter by size, metro and specialty, and access 1,604 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Electrical insulation manufacturers based in the United States at a glance
As of Sep 16, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 195 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “electrical insulation manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,604 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 16, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “electrical insulation manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many electrical insulation manufacturers are there based in the United States?
RevenueBase identified 195 company matches for electrical insulation manufacturers associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
SPI tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most electrical insulation manufacturers?
Houston leads with 9 company records, followed by Charlotte (3) and Miami (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,604 professional contacts with verified work emails tracked across these 195 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 16, 2026.
Ready to reach these companies? Verified emails and direct dials for all 195 electrical insulation manufacturers based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Electrical insulation manufacturers by geography
- Electrical insulation manufacturers based in Brazil
- Electrical insulation manufacturers based in Canada
- Electrical insulation manufacturers based in France
- Electrical insulation manufacturers based in Germany
- Electrical insulation manufacturers based in India
- Electrical insulation manufacturers based in Italy
- Electrical insulation manufacturers based in the Netherlands
- Electrical insulation manufacturers based in Türkiye
- Electrical insulation manufacturers based in the United Kingdom
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Electrical insulation manufacturers based in Brazil
- Electrical insulation manufacturers based in Canada
- Electrical insulation manufacturers based in France
- Electrical insulation manufacturers based in Germany
- Electrical insulation manufacturers based in India
- Electrical insulation manufacturers based in Italy
Company intelligence · public preview
Top 25 electrical insulation manufacturers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 195 matching company records for electrical insulation manufacturers based in the United States, with 4,343 tracked contacts and 1,604 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 electrical insulation manufacturers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | SPIspi-co.com HQ: Charlotte, NC, United StatesReported employees: 1,001-5,000 | Charlotte, NC, United States | 1,001-5,000 | Exact match | 571 contacts → |
“SPI is a global leader in the Distribution and Specialty Fabrication of insulation products for Thermal, Acoustic, Fire Protection and Refractory applications.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | The Okonite Companyokonite.com HQ: Ramsey, NJ, United StatesReported employees: 1,001-5,000 | Ramsey, NJ, United States | 1,001-5,000 | Exact match | 477 contacts → |
“The Okonite Company was founded in 1878 making it one of the original insulators of electrical wire and cable in the United States.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Unifraxunifrax.com HQ: Tonawanda, NY, United StatesReported employees: 1,001-5,000 | Tonawanda, NY, United States | 1,001-5,000 | Exact match | 398 contacts → |
“At Unifrax, we provide innovative solutions to our customers' application problems across several different industries.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | NUTECnutec.com HQ: Huntersville, NC, United StatesReported employees: 201-500 | Huntersville, NC, United States | 201-500 | Exact match | 208 contacts → |
“NUTEC is a leading manufacturer of superior quality, high-temperature insulation and fire protection products.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | HQ: Denver, CO, United StatesReported employees: 201-500 | Denver, CO, United States | 201-500 | Exact match | 141 contacts → |
“JM is the leading manufacturer of thermal insulation solutions for high and low-temperature industrial applications.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | K-Flex USAkflexusa.com HQ: Youngsville, NC, United StatesReported employees: 201-500 | Youngsville, NC, United States | 201-500 | Exact match | 133 contacts → |
“K-FLEX USA is the North American division of the IK Insulation Group, an innovative leader in flexible elastomeric foam insulation with 12 production facilities worldwide and a…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Enduro Compositescreativecompositesgroup.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 105 contacts → |
“Enduro Composites is a vertically integrated manufacturer of FRP composites.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Mastermold, LLCmastermoldllc.com HQ: Johnson Creek, WI, United StatesReported employees: 51-200 | Johnson Creek, WI, United States | 51-200 | Exact match | 93 contacts → |
“MasterMold, LLC is a multi-site, Wisconsin based manufacturer.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Epsilyteepsilyte.comHQ: The Woodlands, TX, United StatesReported employees: 201-500 | The Woodlands, TX, United States | 201-500 | Exact match | 87 contacts → |
“Epsilyte is one of North America’s leading producers of advanced insulative materials.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Plastics Engineering Company Plencoplenco.com HQ: Sheboygan, WI, United StatesReported employees: 201-500 | Sheboygan, WI, United States | 201-500 | Exact match | 85 contacts → |
“PLENCO is a materials company advancing the systems that power industry.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Jushi USAjushiusa.com HQ: Irwindale, CA, United StatesReported employees: 5,001-10,000 | Irwindale, CA, United States | 5,001-10,000 | Exact match | 84 contacts → |
“Jushi Group, headquartered in the Tongxiang Economic Development Zone, Zhejiang, China, is one of the world’s largest producers of fiberglass reinforcements.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  The Bayou Companiesbayoucompanies.comHQ: New Iberia, LA, United StatesReported employees: 501-1,000 | New Iberia, LA, United States | 501-1,000 | Exact match | 71 contacts → |
“Founded in 1942, Bayou is widely recognized as a market leader in onshore pipe coatings and offshore coatings and insulation, including highly-specialized insulation for the oil &…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Davlyn Groupdavlyngroup.com HQ: Spring City, PA, United StatesReported employees: 201-500 | Spring City, PA, United States | 201-500 | Exact match | 69 contacts → |
“Davlyn Group is a leading U.S-based manufacturer of technical textiles and composites for the industrial, commercial, and residential markets.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Norplex-Micartanorplex-micarta.com HQ: Postville, IA, United StatesReported employees: 51-200 | Postville, IA, United States | 51-200 | Exact match | 63 contacts → |
“Life Critical.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | The Nelson Companiesnelsoninsulation.com HQ: Lake Zurich, IL, United StatesReported employees: 51-200 | Lake Zurich, IL, United States | 51-200 | Exact match | 53 contacts → |
“Founded in 1958, The Nelson Companies is a family of independently operated specialty contracting businesses serving commercial, industrial, healthcare, education, manufacturing…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Haysite Reinforced Plastics LTDhaysite.com HQ: Erie, PA, United StatesReported employees: 51-200 | Erie, PA, United States | 51-200 | Exact match | 51 contacts → |
“Haysite Reinforced Plastics, located in Erie, PA, is among the worldwide leaders in the formulation and processing of thermoset composite materials.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Pacor INCpacorinc.com HQ: Bordentown, NJ, United StatesReported employees: 51-200 | Bordentown, NJ, United States | 51-200 | Exact match | 45 contacts → |
“With fabricating facilities in New Jersey, North Carolina and Georgia, Pacor custom fabricates and distributes fiberglass, aerogel, ceramic and foam industrial insulation products…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | OLD Dominion Insulationolddominion.group HQ: Midlothian, VA, United StatesReported employees: 501-1,000 | Midlothian, VA, United States | 501-1,000 | Exact match | 41 contacts → |
“ODI is the premier insulation contractor in the commercial and industrial marketplace, specializing in mechanical insulation, low temperature refrigeration work, installation of…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Janco Engineered Products LLCjancoengineeredproducts.com HQ: Mishawaka, IN, United StatesReported employees: 51-200 | Mishawaka, IN, United States | 51-200 | Exact match | 41 contacts → |
“Janco Engineered Products manufactures a wide range of advanced composites.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Insul-Therm International INCinsultherm.com HQ: Commerce, CA, United StatesReported employees: 51-200 | Commerce, CA, United States | 51-200 | Exact match | 39 contacts → |
“Insul-Therm Intl.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Shannon Global Energy Solutionsshannonglobalenergy.com HQ: North Tonawanda, NY, United StatesReported employees: 51-200 | North Tonawanda, NY, United States | 51-200 | Exact match | 36 contacts → |
“Manufacturer's of INSULTECH Thermal Acoustic Blanket Insulation systems.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | TSG Resolutetsgresolute.com HQ: Americus, GA, United StatesReported employees: 201-500 | Americus, GA, United States | 201-500 | Exact match | 36 contacts → |
“TSG Resolute is the leading provider to the major OEM marketplaces for a wide range of products that includes gaskets, thermal insulation, acoustical insulation, electrical…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | General Coatings Manufacturing Corpgeneralcoatings.net HQ: Fresno, CA, United StatesReported employees: 51-200 | Fresno, CA, United States | 51-200 | Exact match | 33 contacts → |
“Over the past 25 years General Coatings Manufacturing Corp.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Neoinsulationneoinsulation.com HQ: Oklahoma City, OK, United StatesReported employees: 51-200 | Oklahoma City, OK, United States | 51-200 | Exact match | 33 contacts → |
“NeoInsulation: Engineering superior insulation solutions with innovative applications for today's energy infrastructure.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Gerome Technologiesgerometech.com HQ: Menands, NY, United StatesReported employees: 51-200 | Menands, NY, United States | 51-200 | Exact match | 33 contacts → |
“Gerome Technologies Inc.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 195 company matches
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Electrical insulation manufacturers: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
194 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 195 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for electrical insulation manufacturers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many electrical insulation manufacturers did RevenueBase find based in the United States?
The saved snapshot records 195 matching company records, 4,343 tracked contacts and 1,604 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Electrical insulation manufacturers by geography
- Electrical insulation manufacturers based in Brazil
- Electrical insulation manufacturers based in Canada
- Electrical insulation manufacturers based in France
- Electrical insulation manufacturers based in Germany
- Electrical insulation manufacturers based in India
- Electrical insulation manufacturers based in Italy
- Electrical insulation manufacturers based in the Netherlands
- Electrical insulation manufacturers based in Türkiye
- Electrical insulation manufacturers based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 electrical insulation manufacturers based in the United States. Snapshot: September 16, 2026. https://revenuebase.ai/companies/electrical-insulation-manufacturers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Electrical insulation manufacturers based in Brazil
- Electrical insulation manufacturers based in Canada
- Electrical insulation manufacturers based in France
- Electrical insulation manufacturers based in Germany
- Electrical insulation manufacturers based in India
- Electrical insulation manufacturers based in Italy
Company intelligence · public preview
Top 25 electrical insulation manufacturers based in the United States
RevenueBase records 195 matching company records for electrical insulation manufacturers based in the United States, with 4,343 tracked contacts and 1,604 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 electrical insulation manufacturers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | SPIspi-co.com HQ: Charlotte, NC, United StatesReported employees: 1,001-5,000 | Charlotte, NC, United States | 1,001-5,000 | Exact match | 571 contacts → |
“SPI is a global leader in the Distribution and Specialty Fabrication of insulation products for Thermal, Acoustic, Fire Protection and Refractory applications.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | The Okonite Companyokonite.com HQ: Ramsey, NJ, United StatesReported employees: 1,001-5,000 | Ramsey, NJ, United States | 1,001-5,000 | Exact match | 477 contacts → |
“The Okonite Company was founded in 1878 making it one of the original insulators of electrical wire and cable in the United States.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Unifraxunifrax.com HQ: Tonawanda, NY, United StatesReported employees: 1,001-5,000 | Tonawanda, NY, United States | 1,001-5,000 | Exact match | 398 contacts → |
“At Unifrax, we provide innovative solutions to our customers' application problems across several different industries.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | NUTECnutec.com HQ: Huntersville, NC, United StatesReported employees: 201-500 | Huntersville, NC, United States | 201-500 | Exact match | 208 contacts → |
“NUTEC is a leading manufacturer of superior quality, high-temperature insulation and fire protection products.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | HQ: Denver, CO, United StatesReported employees: 201-500 | Denver, CO, United States | 201-500 | Exact match | 141 contacts → |
“JM is the leading manufacturer of thermal insulation solutions for high and low-temperature industrial applications.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | K-Flex USAkflexusa.com HQ: Youngsville, NC, United StatesReported employees: 201-500 | Youngsville, NC, United States | 201-500 | Exact match | 133 contacts → |
“K-FLEX USA is the North American division of the IK Insulation Group, an innovative leader in flexible elastomeric foam insulation with 12 production facilities worldwide and a…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Enduro Compositescreativecompositesgroup.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 105 contacts → |
“Enduro Composites is a vertically integrated manufacturer of FRP composites.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Mastermold, LLCmastermoldllc.com HQ: Johnson Creek, WI, United StatesReported employees: 51-200 | Johnson Creek, WI, United States | 51-200 | Exact match | 93 contacts → |
“MasterMold, LLC is a multi-site, Wisconsin based manufacturer.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Epsilyteepsilyte.com HQ: The Woodlands, TX, United StatesReported employees: 201-500 | The Woodlands, TX, United States | 201-500 | Exact match | 87 contacts → |
“Epsilyte is one of North America’s leading producers of advanced insulative materials.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Plastics Engineering Company Plencoplenco.com HQ: Sheboygan, WI, United StatesReported employees: 201-500 | Sheboygan, WI, United States | 201-500 | Exact match | 85 contacts → |
“PLENCO is a materials company advancing the systems that power industry.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Jushi USAjushiusa.com HQ: Irwindale, CA, United StatesReported employees: 5,001-10,000 | Irwindale, CA, United States | 5,001-10,000 | Exact match | 84 contacts → |
“Jushi Group, headquartered in the Tongxiang Economic Development Zone, Zhejiang, China, is one of the world’s largest producers of fiberglass reinforcements.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | The Bayou Companiesbayoucompanies.com HQ: New Iberia, LA, United StatesReported employees: 501-1,000 | New Iberia, LA, United States | 501-1,000 | Exact match | 71 contacts → |
“Founded in 1942, Bayou is widely recognized as a market leader in onshore pipe coatings and offshore coatings and insulation, including highly-specialized insulation for the oil &…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Davlyn Groupdavlyngroup.com HQ: Spring City, PA, United StatesReported employees: 201-500 | Spring City, PA, United States | 201-500 | Exact match | 69 contacts → |
“Davlyn Group is a leading U.S-based manufacturer of technical textiles and composites for the industrial, commercial, and residential markets.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Norplex-Micartanorplex-micarta.com HQ: Postville, IA, United StatesReported employees: 51-200 | Postville, IA, United States | 51-200 | Exact match | 63 contacts → |
“Life Critical.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | The Nelson Companiesnelsoninsulation.com HQ: Lake Zurich, IL, United StatesReported employees: 51-200 | Lake Zurich, IL, United States | 51-200 | Exact match | 53 contacts → |
“Founded in 1958, The Nelson Companies is a family of independently operated specialty contracting businesses serving commercial, industrial, healthcare, education, manufacturing…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Haysite Reinforced Plastics LTDhaysite.com HQ: Erie, PA, United StatesReported employees: 51-200 | Erie, PA, United States | 51-200 | Exact match | 51 contacts → |
“Haysite Reinforced Plastics, located in Erie, PA, is among the worldwide leaders in the formulation and processing of thermoset composite materials.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Pacor INCpacorinc.com HQ: Bordentown, NJ, United StatesReported employees: 51-200 | Bordentown, NJ, United States | 51-200 | Exact match | 45 contacts → |
“With fabricating facilities in New Jersey, North Carolina and Georgia, Pacor custom fabricates and distributes fiberglass, aerogel, ceramic and foam industrial insulation products…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | OLD Dominion Insulationolddominion.group HQ: Midlothian, VA, United StatesReported employees: 501-1,000 | Midlothian, VA, United States | 501-1,000 | Exact match | 41 contacts → |
“ODI is the premier insulation contractor in the commercial and industrial marketplace, specializing in mechanical insulation, low temperature refrigeration work, installation of…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Janco Engineered Products LLCjancoengineeredproducts.com HQ: Mishawaka, IN, United StatesReported employees: 51-200 | Mishawaka, IN, United States | 51-200 | Exact match | 41 contacts → |
“Janco Engineered Products manufactures a wide range of advanced composites.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Insul-Therm International INCinsultherm.com HQ: Commerce, CA, United StatesReported employees: 51-200 | Commerce, CA, United States | 51-200 | Exact match | 39 contacts → |
“Insul-Therm Intl.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Shannon Global Energy Solutionsshannonglobalenergy.com HQ: North Tonawanda, NY, United StatesReported employees: 51-200 | North Tonawanda, NY, United States | 51-200 | Exact match | 36 contacts → |
“Manufacturer's of INSULTECH Thermal Acoustic Blanket Insulation systems.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | TSG Resolutetsgresolute.com HQ: Americus, GA, United StatesReported employees: 201-500 | Americus, GA, United States | 201-500 | Exact match | 36 contacts → |
“TSG Resolute is the leading provider to the major OEM marketplaces for a wide range of products that includes gaskets, thermal insulation, acoustical insulation, electrical…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | General Coatings Manufacturing Corpgeneralcoatings.net HQ: Fresno, CA, United StatesReported employees: 51-200 | Fresno, CA, United States | 51-200 | Exact match | 33 contacts → |
“Over the past 25 years General Coatings Manufacturing Corp.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Neoinsulationneoinsulation.com HQ: Oklahoma City, OK, United StatesReported employees: 51-200 | Oklahoma City, OK, United States | 51-200 | Exact match | 33 contacts → |
“NeoInsulation: Engineering superior insulation solutions with innovative applications for today's energy infrastructure.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Gerome Technologiesgerometech.com HQ: Menands, NY, United StatesReported employees: 51-200 | Menands, NY, United States | 51-200 | Exact match | 33 contacts → |
“Gerome Technologies Inc.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 195 company matches
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Electrical insulation manufacturers: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
194 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 195 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for electrical insulation manufacturers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many electrical insulation manufacturers did RevenueBase find based in the United States?
The saved snapshot records 195 matching company records, 4,343 tracked contacts and 1,604 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Electrical insulation manufacturers by geography
- Electrical insulation manufacturers based in Brazil
- Electrical insulation manufacturers based in Canada
- Electrical insulation manufacturers based in France
- Electrical insulation manufacturers based in Germany
- Electrical insulation manufacturers based in India
- Electrical insulation manufacturers based in Italy
- Electrical insulation manufacturers based in the Netherlands
- Electrical insulation manufacturers based in Türkiye
- Electrical insulation manufacturers based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 electrical insulation manufacturers based in the United States. Snapshot: September 16, 2026. https://revenuebase.ai/companies/electrical-insulation-manufacturers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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