rubber ring (LRD-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 ... if you need them. NBR ,SILICONE VITON rubber ring (LRD-16)