Rubber & Elastomer
CR Technology has a huge inventory of rubber materials in stock and ready to fabricate for Gaskets, Seals, Washers, Spacers, Vibration Pads, Discs and Custom Shapes for a wide variety of applications. We also supply Molded O-Rings, Spliced (Vulcanized) O-Rings, Bumpers, Grommets and Extrusions.
CRT can fabricate any elastomer type imaginable and many other hard to find exotic materials. If you require any type of rubber material fabricated precisely to your drawing or custom specifications, let us supply it to you in rapid fashion.
Our Materials
We carry a large inventory of products instock and ready to fabricate for you. These include:
Additional Materials Routinely Cut
- Adhesives
- Blends
- Ceramic Papers
- Chipboard
- Cork
- Corrugated
- Custom Laminates
- Dampeners
- Fabrics
- Felt
- Fiberglass
- Flexible Magnets
- Foam
- Foils
- Leather
- Masking
- Protective Films
- Velcro
- Veneers
Rubber Material Properties and Applications
Natural Rubber (Pure Gum)
Durometer Range: 30 to 90
Temperature Range: -65°F to +160°F
Applications: Any situation where non- marking is desired, wipers, squeegee, certain medical
Not Recommended For
- High temperatures
- Poor resistance to ozone, sunlight and flame
- Poor resistance to oils, gasoline, hydrocarbon solvents (degreasers), aliphatic and aromatic hydrocarbons and chlorinated solvents
Typical Properties
- Excellent mechanical properties
- Excellent resilience and compression set
- Excellent electrical resistivity
- Excellent adhesion to fabric and metals
- Excellent resistance to water and dilute acids and alkalis
- Good flexibility at low temperatures
- Good resistance to abrasion
- Good resistance to oxidation, steam, ketones and oxygenated solvents, alcohols and ammonia
- OK in concentrated alkali and acid
Neoprene
Durometer Range: 20, 40, 50, 60, 70, 80
Temperature Range: -30°F to +212°F
Applications: V-belts, impellers, underground cables, hose, many different applications for seals. Gaskets, washers
Not Recommended For
- Chlorinated solvents, degreasers, diester synthetic lubricants
- Limited flexibility at low temperatures
Typical Properties
- Excellent ozone, weather and natural aging resistance
- Excellent abrasion resistance
- Excellent resistance to alcohols, ammonia, dilute and concentrated acids and alkalis
- Good heat resistance
- Good mechanical properties
- Good compression set
- Good flame resistance
- Good resistance to water, steam, most oils and petroleum products
- OK in kerosene, ketones and oxygenated solvents
Nitrile (Buna-N)
Durometer Range: 30A to 70D
Temperature Range: -60°F to +300°F
Applications: Gasoline hose, hydraulic parts, oil contact, linings, gaskets, washers, seals
Not Recommended For
- Low resistance to ozone and sunlight
- Poor in ketones and oxygenated solvents
- Not recommended in methyl chloride
- Poor flame resistance
- Poor electrical resistivity
Typical Properties
- Excellent oil, gasoline and aliphatic hydrocarbons (such as kerosene) resistance
- Good heat resistance
- Good mechanical properties
- Good compression set
- Good resistance to water, ammonia, concentrated acids, alkalis and aromatic hydrocarbons
- Good resistance to oxidation
- OK in steam, alcohols and chlorinated solvents
Silicone
Durometer Range: (Shore A) 10 to 85
Temperature Range: -100°F to +400°F
Applications: Aviation, aerospace, electronics, healthcare, medical, food processing
Not Recommended For
- Poor mechanical properties
- Low tensile strength
- Poor resistance to aliphatic hydrocarbons
- Poor resistance to oil and gasoline
- Not recommended for degreasers and solvents, especially chlorinated solvents like methyl chloride
Typical Properties
- Excellent heat resistance
- Excellent resistance to ozone, sunlight and oxidation
- Excellent electrical resistivity
- Excellent flame resistance
- Excellent resistance to water, ammonia and alkalis (dilute and concentrated)
- Retains excellent flexibility at low temperature
- Good compression set resistance
- Good resistance to dilute acids
- OK in steam, alcohol, concentrated acid, ketones and oxygenated solvents
Fluroelastomer / Flurocarbon (Viton ®)
Durometer Range: (Shore A) 55 to 90
Temperature Range: 10°F to +400°F
Applications: Automotive seals, engine grommets, low outgassing computer seals
Not Recommended For
- Poor low temperature flexibility except for highly specialized grades
- Is attacked by alcohols, strong alkalis and amines
- Inferior friction and tack characteristics
*Viton is a registered trademark of DuPont
Typical Properties
- Excellent resistance to heat, oxidation, ozone, hydrocarbons, and many other chemicals
- Excellent vibration dampening characteristics
- Can be formulated for excellent compression set resistance
- Good abrasion resistance at ambient and elevated temperatures
- Good flame resistance
Hypalon ®
Durometer Range: (Shore A) 40 to 90
Temperature Range: -30°F to +260°F
Applications: Wire and cable, roll covers, hose, roofing membranes, water reservoir liners
Not Recommended For
- Inferior friction and tack
- Poor compression set at elevated temperatures
- Attacked by chlorinated and aromatic hydrocarbons
*Hypalon is a registered trademark of DuPont
Typical Properties
- Resists wide pH variations of chemicals
- Good high temperature resistance
- Good ozone and weathering resistance
- Fair to good hydrocarbon resistance
- Good dielectric properties
- Good flame resistance
Butyl
Durometer Range: (Shore A) 30 to 80
Temperature Range: 50°F to +212°F
Applications: Shock mounts, bladders, membranes, inner tubes, bumpers, caulking, pharmaceuticals
Not Recommended For
- Relatively poor abrasion resistance
- Poor resistance to hydrocarbons
- Not inherently flame resistant
- Prone to stress relaxation and creep with time
Typical Properties
- Unsurpassed for vibration dampening and control
- Unsurpassed for gas permeation resistance
- Good water, acid and base resistance
- Good oxidation and ozone resistanc
- Good electricals; can be made either insulative or conductive
EPDM
Durometer Range: (Shore A) 40 to 90
Temperature Range: -40°F to +270°F
Applications: “Wet” rollers, roofing membranes, windshield wiper blades, wire, cable and bladders
Not Recommended For
- Poor abrasion resistance
- Poor hydrocarbon resistance
- Poor flame resistance
Typical Properties
- Excellent weathering resistance
- Excellent resistance to oxidation, heat and ozone
- Excellent acid, base and water resistance
- Good dielectrics
Flurosilicone
Durometer Range: (Shore A) 40 to 60
Temperature Range: -100°F to +450°F
Applications: Aeronautical seals, highly specialized and extreme low temperature seals
Not Recommended For
- Poor mechanical properties rating
- Low tensile strength
- Fair compression set resistance
- Poor resistance to ketones and oxygenated solvents
Typical Properties
- Excellent heat resistance
- Excellent resistance to ozone, sunlight and oxidation
- Excellent electrical resistivity
- Excellent flame resistance
- Excellent resistance to water, ammonia, dilute acids and alkalis
- Retains excellent flexibility at low temperature
- Excellent resistance to lubricating oils, fuel oils and hydrocarbons such as kerosene
- Good resistance to concentrated acids and alkalis
- OK in steam and alcohols
Polyurethane
Durometer Range: (Shore A) 50 to 90
Temperature Range: -30°F to +160°F
Applications: Friction drive rolls, abrasion resistant wheels
Not Recommended For
- Physical properties deteriorate rapidly when temperatures approach 160°F
- Certain formulations are sensitive to moisture
- Poor dielectric strength
- Poor flame resistance
- Attacked by concentrated acids, ketones, chlorinated hydrocarbons
Typical Properties
- Unsurpassed abrasion resistance
- Excellent friction material for rolls or drive mechanism
- Resistance to many hydrocarbons
- Resists ozone attack
*NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets.
