Company lists · Data refreshed September 2026

Top 25 Flange gasket manufacturers based in the United States

Name: Flange gasket manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 254 companies tracked

RevenueBase identified 254 flange gasket manufacturers headquartered in the United States as of September 2026 and tracks 4,811 professional contacts across them, including 1,700 with verified work emails. Houston is the largest hub.

This list covers flange gasket manufacturers 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 30, 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 30, 2026 86% judged on-target in blind review

254Companies

4,811Contacts tracked

1,700Verified emails

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The 25 largest flange gasket manufacturers based in the United States

Ranked by team size

Top 25 of 254 flange gasket manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to flange gasket manufacturers: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Garlock Family Of Companies	Indirect evidence	Palmyra, NY, United StatesHQ checked Sep 30, 2026	1,001-5,000	526 contacts →
	Indirect evidence “Garlock provides solutions that seal the most demanding fluid-handling equipment and processes, with more than sealing solutions for a diverse range of industries world-wide: •…” Source: RevenueBase Database · checked Sep 30, 2026
2	Lamons	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	501-1,000	410 contacts →
	Strong evidence “Founded in 1947, Lamons is one of the largest privately held gasket, seal, bolt and hose assembly manufacturers in the world.” Source: RevenueBase Database · checked Sep 30, 2026
3	Flexitallic	Strong evidence	United StatesHQ checked Sep 30, 2026	1,001-5,000	390 contacts →
	Strong evidence “Flexitallic is the market leader in the manufacture and supply of static sealing solutions, delivering high quality industrial gaskets and providing support and engineering…” Source: RevenueBase Database · checked Sep 30, 2026
4	Utex Industries INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	501-1,000	304 contacts →
	Indirect evidence “Utex Industries, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
5	GHX Industrial, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	501-1,000	261 contacts →
	Partial evidence “Headquartered in Houston, TX, GHX Industrial LLC is a value added distributor that provides fluid sealing (gaskets), fluid transfer (hoses) and other products to a variety of…” Source: RevenueBase Database · checked Sep 30, 2026
6	Rubber & Gasket Company Of America, INC	Indirect evidence	Memphis, TN, United StatesHQ checked Sep 30, 2026	51-200	155 contacts →
	Indirect evidence “RGA is an industrial rubber distributor and fabricator.” Source: RevenueBase Database · checked Sep 30, 2026
7	Sealing Devices INC	Indirect evidence	Lancaster, NY, United StatesHQ checked Sep 30, 2026	201-500	115 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
8	Seal & Design INC	Indirect evidence	Clarence, NY, United StatesHQ checked Sep 30, 2026	51-200	95 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
9	APG	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	80 contacts →
	Partial evidence “Master Distributor & Manufacturer of fluid sealing and associated products to distribution and industry by providing value through product's availability and response time to our…” Source: RevenueBase Database · checked Sep 30, 2026
10	HGC Industries	Strong evidence	Indianapolis, IN, United StatesHQ checked Sep 30, 2026	201-500	67 contacts →
	Strong evidence “HGC Industries, a worldwide leader in sealing and stamping solutions, designs and manufactures gaskets, seals, and fabrications.” Source: RevenueBase Database · checked Sep 30, 2026
11	Dan-Loc Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	66 contacts →
	Indirect evidence “We perform so you can perform.” Source: RevenueBase Database · checked Sep 30, 2026
12	State Seal Company	Strong evidence	Chandler, AZ, United StatesHQ checked Sep 30, 2026	51-200	66 contacts →
	Strong evidence “State Seal Company is a manufacturer and distributor of a comprehensive range of both standard and custom designed seals, gaskets and converted products.” Source: RevenueBase Database · checked Sep 30, 2026
13	Cometic Gasket, INC	Partial evidence	Concord Twp, OH, United StatesHQ checked Sep 30, 2026	51-200	62 contacts →
	Partial evidence “Cometic Gasket, Inc, is a leading worldwide supplier of shelf-stock, custom and short-run gaskets for the performance, automotive, powersports, original equipment and…” Source: RevenueBase Database · checked Sep 30, 2026
14	API International, INC	Strong evidence	Greenfield, IN, United StatesHQ checked Sep 30, 2026	51-200	57 contacts →
	Strong evidence “API International, Inc, founded in 1968, manufactures flanges, expansion joints, valve accessories and other pipe fittings for Agriculture, Exhaust, HVAC and Water Works.” Source: RevenueBase Database · checked Sep 30, 2026
15	Magnetic Seal, LLC	Indirect evidence	Warren, RI, United StatesHQ checked Sep 30, 2026	51-200	48 contacts →
	Indirect evidence “Our mission is to find better ways to generate sustained success for our customers, team members and suppliers by continually advancing our engineering, quality and manufacturing…” Source: RevenueBase Database · checked Sep 30, 2026
16	Lauren Manufacturing, LLC	Partial evidence	New Philadelphia, OH, United StatesHQ checked Sep 30, 2026	201-500	47 contacts →
	Partial evidence “With more than forty years of polymer seal and gasket experience, Lauren Mfg is well qualified as your single, integrated source for high-tech molded and extruded polymer…” Source: RevenueBase Database · checked Sep 30, 2026
17	Marco Rubber & Plastics	Indirect evidence	Seabrook, NH, United StatesHQ checked Sep 30, 2026	51-200	45 contacts →
	Indirect evidence “At Marco Rubber & Plastics, we are experts in solving complex sealing challenges, and we never settle for anything but the right sealing solution for our customers.” Source: RevenueBase Database · checked Sep 30, 2026
18	Seal Methods INC	Partial evidence	Santa Fe Springs, CA, United StatesHQ checked Sep 30, 2026	201-500	43 contacts →
	Partial evidence “Founded in 1974, Seal Methods, Inc.(SMI) is a full service premier fabricator of gaskets, tapes, seals and precision die cuts.” Source: RevenueBase Database · checked Sep 30, 2026
19	Seal Company	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 30, 2026	51-200	42 contacts →
	Indirect evidence “Solving sealing challenges for over 50 years worldwide.” Source: RevenueBase Database · checked Sep 30, 2026
20	Wyatt Seal, INC	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 30, 2026	51-200	39 contacts →
	Indirect evidence “Wyatt Seal helps you find the right sealing solution for any application.” Source: RevenueBase Database · checked Sep 30, 2026
21	Moss Seal CO	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	33 contacts →
	Indirect evidence “Moss Seal Company globally supplies fluid sealing solutions, of the highest quality manufacturing & materials, in the fast paced industry of oil & gas.” Source: RevenueBase Database · checked Sep 30, 2026
22	XTO Incorporated	Partial evidence	Liverpool, NY, United StatesHQ checked Sep 30, 2026	51-200	30 contacts →
	Partial evidence “For over forty-five years, XTO has been your manufacturing partner for quality fabricating and die cutting of gaskets and gasket materials.” Source: RevenueBase Database · checked Sep 30, 2026
23	Specification Rubber Products, INC	Partial evidence	Alabaster, AL, United StatesHQ checked Sep 30, 2026	51-200	29 contacts →
	Partial evidence “Since 1968, Specification Rubber Products has been a manufacturer of rubber components for the waterworks industry.” Source: RevenueBase Database · checked Sep 30, 2026
24	Seals Eastern INC	Partial evidence	Red Bank, NJ, United StatesHQ checked Sep 30, 2026	51-200	28 contacts →
	Partial evidence “Seals Eastern, Incorporated manufactures for the most demanding applications throughout the world.” Source: RevenueBase Database · checked Sep 30, 2026
25	Delta Machine & Ironworks	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 30, 2026	51-200	27 contacts →
	Indirect evidence “Founded by John D.” Source: RevenueBase Database · checked Sep 30, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: flange gasket manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names flange gasket manufacturers.
Partial evidence: Its own public description names part of flange gasket manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name flange gasket manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 254 flange gasket manufacturers based in the United States

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Flange gasket manufacturers based in the United States at a glance

As of Sep 30, 2026

35.3%Verified-email coverage

18.9Average contacts per company

11-50Median size (employees)

11.4%Largest-city concentration · Houston

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

113

51-200

201-500

501-1,000

1,001-5,000

10001+

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 254 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 flange gasket manufacturers, 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 “flange gasket manufacturers”. 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 flange gasket manufacturers), 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 flange gasket manufacturers, 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, 1,700 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 30, 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.

Flange gasket manufacturers by metro

Flange gasket manufacturers in Houston29

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 flange gasket manufacturers, 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 flange gasket manufacturers are there based in the United States?

RevenueBase identified 254 flange gasket manufacturers 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?

Garlock Family Of Companies, headquartered in Palmyra, tops this list with the largest team on record.

Which city has the most flange gasket manufacturers?

Houston leads with 29 headquartered companies, followed by Fort Worth (4) and Columbia (3).

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 1,700 verified decision-maker contacts tracked across these 254 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 30, 2026.

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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.