... :X ring,U ring,V ring,O ring,etc CR Rubber o ring 1. Main materialNeoprene(CR),also can use Natural ... rubber, SBR, NBR, IIR, PU, EPDM, Silicone, FKM, FVMQ, HNBR, ECO, ... appliances, building vibration isolation and other industry. For example, air blower, water pump, instrument, measuring of ships and so on.7 ...