CORK & CORK RUBBER

Cork & Cork Rubber Products

Commercial Gasket & Packing is a leading manufacturer of high quality cork composition and cork rubber products. Cork is a popular material for gasket manufacturing due to its high compressibility and flexibility. When combined with rubber, such as silicone or neoprene, cork gaskets exhibit good oil, solvent and fuel resistance. Our cork is offered in a range of grades that are impermeable, buoyant, elastic, and fire resistant. The standard thicknesses of cork materials range from 1/32″ to 1/4″ thick. All cork composition and cork rubber materials are available with or without pressure sensitive adhesive (PSA) backing. Commercial Gasket & Packing provides full production capabilities from prototype and short run quantities through large production runs.

Available Cork and Cork Rubber Materials

Commercial Gasket & Packing fabricates die cut products from a wide selection of cork and cork rubber materials including:

Composition Cork
Cork/Synthetic Rubber Blend
Cork/EPDM Blend
Cork/Neoprene® Blend
Cork/Nitrile Blend
Cork/Silicone Blend
Cork/Viton®
Cork/Hypalon® Blend
Cork/Sponge Blend

Cork Composition Gaskets

Composition cork is a lightweight and stable material. It is made from a hydrophobic substance that prevents water from penetrating. It exhibits excellent compressibility and moisture resistance and an aesthetic appearance making it popular for consumer product applications. Composition cork materials have high oil resistance, a high degree of compressibility and practically no lateral flow. They also possess an inherently high friction value and can withstand extremely high bolting pressures without crushing the material.

Advantages of Composition Cork

Extremely Compressible
Excellent Insulation & Fire Retardant Qualities
Highly Resistant to Wear & Tear
Unaffected by temperature extremes
Resistant to Sound & Seepage
Lightweight & Buoyant
Virtually Indestructible

Typical composition cork applications include: coaster & trivet backing, glass separation pads, gaskets, seals, strips, washers, bulletin board, protective padding, adhesive-backed bumpers, spacers and feet, die cut coasters & discs.

Cork Rubber Gaskets

Cork Rubber material is a combination of first grade granulated cork and a synthetic rubber polymer. This gives the product the high resilience of rubber and the compressibility of cork. It is manufactured by combining the cork, glycerin-glue, and a rubber binder under heat and pressure. The material is usually 70% cork to 30% rubber binder. The rubber is added to provide the ability to seal and provide chemical compatibility while helping to resist fungus, acid and weather conditions. It is an excellent material for gaskets and other industrial applications. Cork rubber material is available in a wide variety of rubber options including: EPDM, Natural Rubber, Neoprene®, Hypalon®, Silicone, Viton®, Nitrile (Buna-N) to best suit the chemical resistance requirement of the gasket. The selection of the best blend of cork and rubber with the correct density will ensure that the finished cork gasket or cork product will last for many years in your application.

Advantages of Cork Rubber

High Compressibility & Flexibility
Wide range of fluid compatibility
Good Resistance to oil, solvent, and fuel
Moderately resistant to fungus, acid, and weather conditions
Resistant to fluid penetration
Reduces levels of transmitted vibration, acoustic insulation
Good for low bolt load application
Anti-slip and impact-resistant, shock absorber

Typical cork rubber applications include: gaskets, bumpers, spacers, stripping, protective pads, anti-vibration, electrical transformers, electrical switchgear, sumps, and crank case covers.

Cork rubber gaskets are used in a wide range of industries including: automotive, railroad, aviation, agricultural, tractor, ship, transformer, petroleum, compressor and electrical equipment.

Please visit our gasket materials page for more information on our extensive selection of materials. Cork materials are available with or without pressure sensitive adhesive (PSA) backing.