... 1.material: NBR, FKM with stainless steel framework 2.feature: excellent resistance against high-temperature, abrasion, oil, corrosion, and ageing, and superior sealing ... to send you for checking the quality. GoodsValve oil sealModelCG125, CD70,etc.Regular colorBrown, green, blue,etc.Oil seal MaterialNBR, FKM, etc.Spring materialStainless ...