Nitrile butadiene rubber (NBR) is a copolymer made of acrylonitrile and butadiene monomer polymerization, mainly produced by low temperature emulsion polymerization, It has excellent oil resistance, high wear resistance, good heat resistance, strong adhesion. Its disadvantages are poor low temperatu
Stop guessing O-ring standards. Learn to identify AS568, JIS, or Metric seals to prevent gland fill failures—measure metal grooves, not deformed seals.