... :AS568 and PG series,all size we can do. O-ring (LRD-17)1.Material: NBR,EPDM,SILICONE,VITON,NR......2 ... .Size: AS568 and PG series,all state standare and non-state standard sizes are available3.Color: black,blue,brown,green ... be hesitate to contact us if you need them O-ring (LRD-17)