Characteristics of Custom Gaskets
Vibration-Dampening SpongesClosed cell or open cell. Available in silicone, EPDM, EPDM/NEO/SBR blends, silicone solid or sponge, poron/microcellular urethane foam.
Electrical Conductive MaterialsSuited for EMI/RFI abilities and Electro-Static Discharge (ESD), pyrolux, copper (110 annealed).
Thermal Insulation BarriersIncludes radiant barriers and wet suit material.
Thermal Conductive GasketsCommonly used to dissipate heat from electrical heat-generating devices.
Electrical BarriersSilicone, Kapton (polyimide film), fish paper (vulcanized fiber), polycarbonate sheet, some with UL 94 flammability rating.
Copper Gasket MaterialWe stock .0007” (1/2 oz), .001”, .0014“(1 oz), .003”, .005”, .008”, and .010” thick (all 110 annealed).
Common Rubber CharacteristicsRubber is either a solid or a sponge. Solid rubber is measured in Durometer on the A scale. A car tire is about 70A Durometer. A sponge is either open cell or closed cell and is classified by Type (1 or 2), Class (A, B, C, or D), and Grade (0, 1, 2, 3, 4, or 5).
Rubber may have many desired characteristics, such as temperature, resistance to oil, solvents, weather, other chemicals, abrasion, compression, and tensile strength. More specific characteristics are mandated by organizations or government agencies [FDA Approved, MIL Spec, UL Rated, NSF Certified, NEMA, ASTM, AMS, CE (European Union Certification), RoHS].
EPDM RubberEthylene Propylene Diene Monomer (EPDM) rubber withstands harsh weather conditions well. EPDM rubber is resistant against UV rays, water, steam, aging, and heat under 350° F. The rubber’s characteristics make it excellent for outdoor use and fair for abrasion and chemicals. Its temperature range is -55 to 300° F, but most commonly -40 to 225° F.
- Common durometers available: 40A-80A
- Rubber durometers (tolerance is usually +/- 5):
- Soft: 10A-40A
- Medium-soft: 40A-50A
- Medium-hard: 50A-70A
- Hard: 70A-95A
- Color: Black