... nitrile rubber. For washing machines, car engine system and a new ring cooling system. Not suitable for use in alcohols, esters ... ovens and other household electrical appliances, also applies to a variety of indirect contact with human skin supplies, such as ... of course, good sealing effect, and can be used in a very strict environment, irreplaceable.PTFE (polytetrafluoroethylene) sealsPTFE PTFE (ju4 ...