... ,NBR,NR,SBR,NR,etc 3.Welcome OEM order Rubber Parts Material : EPDM,CR,NBR,NR,SBR,NR,etc Product information ... ourself. Ring Gasket We can offer various rubber parts, like rubber bonded to metal parts, swimming fins, heart rate chest belt, silicone ... phone, MP3/MP4, silicone earplug, etc. Rubber performance: Custom rubber parts