... 3)heat resisting 4)fast delivery Custom NR rubber seal ring:1.Product NameNR rubber seal ring2.Country of OriginChina Mainland3.Advantage A. Ozone ... company. Our main products are rubber seals, oil seals, hydraulic seals, rubber sheet, rubber mat, O-ring, auto and motorcycle parts, oil ... Thematerial of these products are NBR, NR, EPDM, FKM, SILICON RUBBER,CR, SBR, EP, IIR etc.Thank you very much for ...