O-ring (LRD-17) Material:NBR,EPDM,SILICONE,VITON,NR...... Size:AS568 and PG ... series,all size we can do. O-ring (LRD-17)1.Material: NBR,EPDM,SILICONE,VITON,NR......2.Size: AS568 ... -state standard sizes are available3.Color: black,blue,brown,green,red,yellow white..4.Well and high quality control5. Hardness: 30-90 ... to contact us if you need them O-ring (LRD-17)