... OEM 2.Certification:ISO9001:2001 Motorcycle cylinder cushion:product and sell all kinds of Motorcycle cylinder cushion: 1. Material: NBR, SILICONE, ... VITON,HNBR, CR, PTFE, EPDM, etc. Can choose on your requirement;2. types of ... and mining rubber parts and other rubber products. The material of these products are NBR, NR, EPDM, FKM, SILICON ...