Rubber Technical Data
Rubber technical data for the most commonly used materials in compression and transfer molding. Be sure to contact us for any information regarding custom rubber molding, material consulting, or rubber technical data.
Natural Rubber
Common Names: Natural rubber (NR)/Gum Rubber
Physical Properties: High tear strength, high strength, flexibility, rebound elasticity, adhesive properties, abrasion resistance, low temperature resistance.
- Tear Resistance: Very Good
- Abrasion Resistance: Excellent
- Rebound: Excellent
- Impact Resistance: Excellent
Uses: Gaskets, Matting, Belting, Noise abatement, Tires, Flooring.
Durometer Range: 20-100 Shore A
Operating Temperature: -60F to 175F
Chemical Resistance: Moderate chemicals, Alcohols, aldehydes, ketones
Silicone
Common Name: Silicone
Physical Properties: Decent physical properties. Excellent temperature properties (high and low)
- Tear Resistance: Poor
- Abrasion Resistance: Fair
- Rebound: Very Good
- Impact Resistance: Fair
Uses: High temperature applications, seals, gaskets, O-rings
Durometer Range: 30-80 Shore A
Operating Temperature: -60F to 550F
Chemical Resistance: Moderate oxidizing chemicals, ozone, sodium hydroxide
Neoprene®
Common Names: Neoprene® (chemically known as Polychloroprene)
Physical Properties: Good flame resistance/flame retarding, weathering resistant, decent resistance to petroleum products, excellent adhesion properties.
- Tear Resistance: Good
- Abrasion Resistance: Excellent
- Rebound: Very Good
- Impact Resistance: Very Good
Uses: Gaskets, Washers, Seals, outdoor applications
Durometer Range: 15-95 Shore A
Operating Temperature: -50F to 250F
Chemical Resistance: Animal fats, vegetable fats, ozone, oils, greases, and oxidizing chemicals.
Nitrile
Common Name: Nitrile, Buna, Buna-N, NBR
Physical Properties: Excellent resistance to petroleum-based fluids such as gas, oil, and hydraulic fluids. Good resistance to acids and alkalis. Wide range of operating temperatures.
- Tear Resistance: Good
- Abrasion Resistance: Very Good
- Rebound: Good
- Impact Resistance: Good
Uses: Seals, gaskets, plugs, caps exposed to petroleum products.
Durometer Range: 30-95 Shore A
Operating Temperature: -30F to 250F
Chemical Resistance: Oils, greases, hydrocarbons, hydraulic fluids, and many chemicals.
Viton®
Common Names: Viton® (chemically known as a Fluoroelastomer)
Physical Properties: Excellent air resistance, excellent oil resistance, performs at both low and high temperatures, very good chemical resistance.
- Tear Resistance: Good
- Abrasion Resistance: Good
- Rebound: Low to Moderate Temperature: Fair. Moderate to High Temperature: Excellent.
- Impact Resistance: Good
Uses: Gaskets, Washers, Seals, Automotive, Aerospace, Chemical Processing,
Durometer Range: 60-90 Shore A
Operating Temperature: -10F to 600F
Chemical Resistance: Acids, animal and vegetable oil, petroleum products, aliphatic, aromatic, and halogenated hydrocarbons.
EPDM
Common Names: EPDM, EPT, EP Rubber
Physical Properties: Resistance to oxidation, ozone, abrasion, chemicals, sunlight, and aging. Poor resistance to solvents, petroleum-based products, and hydrocarbons.
- Tear Resistance: Fair
- Abrasion Resistance: Very Good
- Rebound: Good
- Impact Resistance: Very Good
Uses: Gaskets, Washers, Seals, Automotive, Aerospace, Chemical Processing,
Durometer Range: 30-90 Shore A
Operating Temperature: -75F to 350F
Chemical Resistance: Ozone, oxidizing chemicals, animal and vegetable oils.
Butyl
Common Names: Butyl
Physical Properties: Very good weathering resistance, low permeability to air, excellent dielectric properties. Poor resistance to petroleum-based fluids.
- Tear Resistance: Good
- Abrasion Resistance: Good
- Rebound: Poor
- Impact Resistance: Good
Uses: Gaskets, Washers, Seals, Automotive, Aerospace, Chemical Processing,
Durometer Range: 40-80 Shore A
Operating Temperature: -60F to 300F
Chemical Resistance: Acids, animal and vegetable oils, greases, ozone, oxidizing chemicals.
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