... rubber products include: bearing seal, valve rubber products, o ring kit, o ring, x ring, v ring, oil seal, wiper seal, u ring, rod seal, piston seal, rubber cord, etc. The ... of partial products is independent research and development by us. V SEAL/ V RING(VA/VE/VL/VS) Hydraulic seal(Ozone resistance) NBR/ EPDM/ VITON