... ,size:50-630 O RING1.Product/Service(We Sell): O-rings,U-type loops,Y-type loops,customized rubber items2.Material NR ... , SI, EPDM, NBR, SBR, FPM, IR,, BR, IIR, PU, etc, just as your request.3.Certification: ... electric appliances, hardware and machinery, hydraumatic and pneumatic products, as well as vehicle and motorcycle fittings.10. Note: a.Models and ...