Nitrile (Buna-N)
Trade Names:
- Nipol . . . Zeon
- Krynac . . . Bayer Polymer
- Nysyn . . . DSM Elastomers
- Chemigum . . . Eliokem
ASTM D1418 Designation: NBR
ASTM D2000/SAE J200 Type, Class: BF, BG, BK, CH
Apple Compound Designation: BN
Standard Color: Black
Description: Presently the seal industry's most widely used and economical elastomer, Nitrile combines excellent resistance to petroleum-based oils and fuels, silicone greases, hydraulic fluids, water and alcohols, with a good balance of such desirable working properties as low compression set, high tensile strength, and high abrasion resistance.
Key Use(s): Oil resistant applications of all types. Low temperature military uses. Off-road equipment. Automotive, marine, aircraft fuel systems. Can be compounded for FDA applications.
Temperature Range
Standard Compound: -40° to +257°F
Special Compound: -76° to +275°F
Hardness (Shore A): 40 to 90.
Features: Comprised of the copolymer butadiene and acrylonitrile, in varying proportions. Compounds can be formulated for service temperature ranging from -85°F to +275°F. Use of Carboxylated Nitrile can have superior abrasion resistance, while still having improved oil resistance.