NBR - Acrylonitrile-Butadiene Rubber

Description: Rotary shaft seal (Oil seal)

Profile: TC - rubber covered OD, sealing lip with garter spring and additional dust lip

Material: NBR 70 Sh

DIN/ISO 1629 Designation:    NBR

ASTM D 1418 Designation:     NBR

Standard Colour:                  Black

Temperature Range:            -30°C (-22°F) ÷ 100°C (212°F)

Pressure:                   ≤ 0.5 bar (0.05 MPa)
Speed:                        ≤ 35 m/s

TC profile is interchangeable with shaft seals AS, GP, A11, HMSA7, WAS, FA, 94, 827S, ADL, DGS, 32, IEL, R23, BASL, ASL, CC, RP, TGP and UE.

Commonly known as Nitrile rubber (NBR) or Buna-N, Acrylonitrile Butadiene Rubber is a copolymer of two monomers: acrylonitrile (ACN) and butadiene. Nowadays used as worldwide economical elastomer NBR offers good mechanical properties together with excellent resistance to mineral oil-based lubricants and greases, hydraulic fluids, alcohols and water. NBR has also a good balance of working properties such as low compression set, high tensile strength, and high abrasion resistance. Its properties are mainly determined by the acrylonitrile content which ranges between 18% and 50%, low ACN contents (<30%) ensure better flexibility at low temperatures, but offer limited resistance to oils and fuels, high ACN contents (>45%) increase resistance to hydrocarbon oils and fuels, but reduce flexibility at low temperatures. The standard NBR material, known as “Medium Nitrile”, offers an average ACN content of approximately 32% and due to its good overall balance suits a wide range of applications.