... .material:SBR,EPDM.CR,NR,NBR,silicone 2.type:O-ring.V-ring,X-ring,Y-ring,D-ring,T-ring 3.sample available Conveyor Belt RingFeatures ... :1. Material: SBR,EPDM.CR,NR,NBR,silicone 2 ... . Type: O-ring.V-ring,X-ring,Y-ring,D-ring,T-ring 3.Feature: oil resistance,aging resistance ...