... VITON/SI/EPDM 3.SIZE:standard and non standatd O RING WHY CHOOSE US?1. Certification: ISO9001, ROHS, REACH, ... hydrocarbons and animal and vegetable oil.7. Packing: Inner plastic bag and outside Cartons8. Delivery: within 10--30 days ... seal, valve rubber products, o ring kit, o ring, x ring, v ring, oil seal, wiper seal, u ring, rod seal, piston seal, ... research and development by us. RUBBER O RING