SBR (Red Rubber) Gaskets Styrene-Butadiene (SBR, Buna-S)

Custom Gasket Mfg. is a leading supplier of high-quality SBR (Red Rubber) gaskets, seals, and custom SBR products.

Our company’s reputation for excellence has been built on our ability to provide our valued customers with the most effective 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. is committed to consistently meet all of your blueprint specifications and tolerance requirements.

Custom Gasket Mfg. specializes in precision die cut and molded SBR rubber gaskets and seals for applications and industries worldwide. SBR rubber is a synthetic polymer, commonly known as “red rubber.” It is a widely used because it is inexpensive and has the ability to deform to uneven flange edges. SBR has excellent impact-strength, abrasion resistance, heat resistance, and sustains flexibility at lower temperatures. Even though SBR is not resistant to oil, gasoline, and hydrocarbon solvents, it performs well in industrial applications which involve contact with chemicals, water, air and steam. SBR rubber functions well in temperatures ranging from -67°F to +180°F.

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Die Cut SBR Gaskets

Die Cut SBR (Red Rubber) Gaskets

Custom Gasket Mfg. provides die cut SBR gaskets in a wide variety of grades, thicknesses, and hardness. The standard thickness of SBR rubber ranges from 1/32″ to 1/4″ thick. SBR rubbers hardness (durometer) is typically 75A durometer however our commercial grade ranges from 40 to 80 durometer, Shore A. Die cut SBR gaskets are generally red or black in color. SBR (Red Rubber) gaskets are available with or without pressure sensitive adhesive (PSA) backing.

Custom Gasket Mfg. Available SBR Grades

  • Commercial Grade SBR
  • Premium Grade SBR
  • Specification Grade SBR (Red or Black)
  • Nylon Inserted SBR

Molded SBR Gaskets

SBR Molded Gaskets and Seals

Custom Gasket Mfg. provides molded SBR gaskets and seals. Our custom SBR rubber molding capabilities include Compression Molding, Transfer Molding, and Rubber Injection Molding. SBR rubber compounds are available from 40 to 80 durometer, Shore A. SBR molded gaskets are generally red or black in color however custom color compounding is available upon request. SBR 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 SBR (Red 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