Company lists · Data refreshed September 2026

Top 20 Liquid silicone rubber molders based in the United States

RevenueBase identified 42 liquid silicone rubber molders headquartered in the United States as of September 2026 and tracks 610 professional contacts across them, including 177 with verified work emails. Brea is the largest hub.

This list covers liquid silicone rubber molders headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review
42Companies
610Contacts tracked
177Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 20 largest liquid silicone rubber molders based in the United States

Ranked by team size
Top 20 of 42 liquid silicone rubber molders based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to liquid silicone rubber molders: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceSt. Charles, IL, United StatesHQ checked Sep 20, 2026201-500108 contacts →

Indirect evidence

“Since 1974 Wise Plastics has been the preferred full turnkey contract manufacturing company across a wide range of industries.”

Source: RevenueBase Database · checked Sep 20, 2026
2Indirect evidencePort Richey, FL, United StatesHQ checked Sep 20, 2026201-500102 contacts →

Indirect evidence

“Seaway Plastics Engineering is a full-service contract manufacturing partner serving the medical device and life sciences industry, helping OEMs bring complex, precision-driven…”

Source: RevenueBase Database · checked Sep 20, 2026
3Strong evidenceWeatherford, TX, United StatesHQ checked Sep 20, 202651-20088 contacts →

Strong evidence

“Jamak is at the forefront of silicone rubber manufacturing.”

Source: RevenueBase Database · checked Sep 20, 2026
4Strong evidenceMiramar, FL, United StatesHQ checked Sep 20, 202651-20057 contacts →

Strong evidence

“SIMTEC is a leading, US-based manufacturer of Liquid Silicone Rubber (LSR) Single-Shot, Two-Shot, and Multi-Shot (LSR/Thermoplastics/Metal) injection molded components.”

Source: RevenueBase Database · checked Sep 20, 2026
5Partial evidenceFiskdale, MA, United StatesHQ checked Sep 20, 202651-20050 contacts →

Partial evidence

“Founded in 1963, G&F Precision Molding is a privately held custom injection molder with locations in Danvers and Fiskdale, Massachusetts.”

Source: RevenueBase Database · checked Sep 20, 2026
6Partial evidenceWorcester, MA, United StatesHQ checked Sep 20, 202611-5018 contacts →

Partial evidence

“ISO13485:2016 - ISO9001:2015 - FDA Registered - Jefferson Rubber Works, Inc.(JRW) offers a one stop resource for all of your custom rubber injection molding company needs.”

Source: RevenueBase Database · checked Sep 20, 2026
7Strong evidenceNew Kensington, PA, United StatesHQ checked Sep 20, 202651-20014 contacts →

Strong evidence

“NAMSCO PLASTICS INC is a custom injection molder of plastic, liquid silicone (LIM) rubber, and two-shot (co-injection) molding in New Kensington PA.”

Source: RevenueBase Database · checked Sep 20, 2026
8Partial evidenceNew Albany, IN, United StatesHQ checked Sep 20, 202611-5013 contacts →

Partial evidence

“PTG Silicones, Inc.”

Source: RevenueBase Database · checked Sep 20, 2026
9Strong evidenceCuyahoga Falls, OH, United StatesHQ checked Sep 20, 202651-20012 contacts →

Strong evidence

“Reuther, founded in 1950, designs and builds Molds for all black Rubber, Silicone, and TPE/TPR compounds.”

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceAmesbury, MA, United StatesHQ checked Sep 20, 202611-509 contacts →

Indirect evidence

“At the speed of innovation, Bold Maker keeps pace with the contemporary kitchen as an ever-innovative manufacturer of custom molds for the candy industry.”

Source: RevenueBase Database · checked Sep 20, 2026
11Partial evidenceSanford, ME, United StatesHQ checked Sep 20, 202611-508 contacts →

Partial evidence

“Specialty silicone dispersions including pigments, organic peroxides, heat stabilizers, and more.”

Source: RevenueBase Database · checked Sep 20, 2026
12Strong evidencePlacentia, CA, United StatesHQ checked Sep 20, 202651-2007 contacts →

Strong evidence

“Since the inception of Liquid Silicone Rubber (LSR), Kipe has been exclusively dedicated to providing the industry with tooling solutions.”

Source: RevenueBase Database · checked Sep 20, 2026
13Strong evidenceNiles, MI, United StatesHQ checked Sep 20, 202611-506 contacts →

Strong evidence

“Specialty Products & Polymers Inc is a Custom Mixer of Silicone, Phenyl Silicone, Fluorosilicone Rubber Compounds.”

Source: RevenueBase Database · checked Sep 20, 2026
14Partial evidenceCerritos, CA, United StatesHQ checked Sep 20, 20261-104 contacts →

Partial evidence

“Custom Silicone Molding* Silicone Prototypes* Silicone Injection Molding* Silicone Overmolding* LSR Prototypes* Medical Grade Silicone* Silicone Compression Molding* Silicone…”

Source: RevenueBase Database · checked Sep 20, 2026
15Partial evidenceSanta Clarita, CA, United StatesHQ checked Sep 20, 202611-503 contacts →

Partial evidence

“LMP is your source for high quality precision molded products.”

Source: RevenueBase Database · checked Sep 20, 2026
16Indirect evidenceDecatur, IN, United StatesHQ checked Sep 20, 202611-503 contacts →

Indirect evidence

“Mid-States Tool & Machine, Inc.”

Source: RevenueBase Database · checked Sep 20, 2026
17Strong evidenceRacine, WI, United StatesHQ checked Sep 20, 202611-502 contacts →

Strong evidence

“A molding company that works with silicone, rubbers and plastics using all available processes with both vertical and horizontal presses.”

Source: RevenueBase Database · checked Sep 20, 2026
18Partial evidenceAurora, IL, United StatesHQ checked Sep 20, 202611-502 contacts →

Partial evidence

“The GUSCO leadership team offers over 37 years of combined knowledge and experience in all disciplines of the rubber mold industry.”

Source: RevenueBase Database · checked Sep 20, 2026
19Indirect evidenceCorona, CA, United StatesHQ checked Sep 20, 202611-501 contacts →

Indirect evidence

“For over 40 years Elastomer Technologies, Inc.”

Source: RevenueBase Database · checked Sep 20, 2026
20Indirect evidenceAthens, TX, United StatesHQ checked Sep 20, 20261-101 contacts →

Indirect evidence

“Delivering Elevated Service & Quality is our Mission, Your Satisfaction is the Result.”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 20 of 42 liquid silicone rubber molders based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 177 reachable decision-makers.

Free signup · no credit card

View the full list →

Liquid silicone rubber molders based in the United States at a glance

As of Sep 20, 2026
29.0%Verified-email coverage
14.5Average contacts per company
11-50Median size (employees)
4.8%Largest-city concentration · Brea
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
12
11-50
20
51-200
7
201-500
3

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 42 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among liquid silicone rubber molders, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “liquid silicone rubber molders”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names liquid silicone rubber molders), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among liquid silicone rubber molders, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 177 across the full list. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names liquid silicone rubber molders, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many liquid silicone rubber molders are there based in the United States?

RevenueBase identified 42 liquid silicone rubber molders headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Wise Plastics Technologies, headquartered in St. Charles, tops this list with the largest team on record.

Which city has the most liquid silicone rubber molders?

Brea leads with 2 headquartered companies, followed by Addison (1) and Amesbury (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 177 verified decision-maker contacts tracked across these 42 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 42 liquid silicone rubber molders based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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 Smart Search, 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.