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Butyl Rubber Gaskets

Butyl Rubber Gaskets Isobutylene Isoprene Rubber (IIR)

Butyl Rubber Gaskets is a recognized leading manufacturer of high quality butyl rubber gaskets, seals, and custom butyl products. Our company’s reputation for excellence has been built on our ability to provide our valued customers with the most effective designing, engineering and manufacturing solutions to meet their most demanding applications. Our main objective is to continuously exceed our customer’s expectations by providing them with high performance gaskets and sealing products, competitive pricing, on-time delivery and exceptional customer service. Custom Gasket Mfg. maintains a modern manufacturing facility along with knowledgeable, technically-oriented professionals enabling us to consistently meet all of your blueprint specifications and tolerance requirements.

Custom Gasket Mfg. has over forty years experience specializing in the manufacturing of precision die cut and molded butyl rubber gaskets and seals for a wide range of industries and applications. Butyl rubber is a copolymer of isobutylene and isoprene. It has exceptionally low gas and moisture permeability and outstanding resistance to heat aging, weather, ozone, chemical attack, flexing, abrasion and tearing. It is used in many applications requiring airtight rubber. Butyl also has excellent resistance to acids and alkalis. Butyl is not recommended for use when in contact with petroleum oils or fluids. Butyl functions well in temperatures ranging from -60°F to +250°F.

Die Cut Butyl Rubber Gaskets

Die Cut Butyl Rubber Gasket

Custom Gasket Mfg. fabricates die cut butyl gaskets and water jet cut butyl gaskets in a wide variety of grades, thicknesses and hardness. The standard thickness of butyl rubber ranges from 1/32" to 1/4" thick. Die cut butyl gaskets are black in color and their hardness (durometer) spans from 40 to 70 durometer, Shore A. Butyl rubbers specifications are ASTM D 2000 - M1AA 407, 507, 607, 707. Butyl gaskets are available with or without pressure sensitive adhesive (PSA) backing.

Molded Rubber Butyl Gaskets

Butyl Molded Gaskets & Seals

Custom Gasket Mfg. specializes in the manufacturing of molded butyl gaskets and seals. Our custom butyl rubber molding capabilities include Compression Molding, Transfer Molding, and Rubber Injection Molding. Butyl (IIR) compounds are available from 40 to 90 durometer, Shore A. Butyl rubber molded products are generally black in color however custom color compounding is available upon request. Butyl rubber molding tolerances are complaint with rubber molding industry standard RMA A2 Precision tolerances.


Please visit our gasket materials page for more information on our extensive selection of materials.

For more information on custom butyl rubber products or to speak with one of our knowledgeable professionals, please feel free to Contact Us or complete our online Request For Quote form.

Call 800-985-6750 or email your inquiry to sales@customgasketmfg.com