... /AEM)4.polyurethane rubber 5.Ptfe rubber etc MaterialSpecialty of Oil SealNBRMineral oil resistance, good abrasion resistance, Use ... not used in ketone and lipid polarsolventsHNBRKeep the feature of NBR, Heat Resistance, Oil Resistance and Weather Resistance ... , chemical resistance, weather resistance is best,Low friction coefficient of the material difference with oil sealFibreThe main material is ...