... -16) Material:NBR,EPDM,SILICONE,VITON,NR...... Size:AS568 and PG series,all size we can do. rubber ring (LRD-16)1 ... .Material: NBR,EPDM,SILICONE,VITON,NR......2.Size: AS568 and ... be hesitate to contact us if you need them. NBR ,SILICONE VITON rubber ring (LRD-16)