rubber gasket 1. type: valve oil seal, wiht one or two spring 2. many models: CG125 ... steel framework 2.feature: excellent resistance against high-temperature, abrasion, oil, corrosion, and ageing, and superior sealing effect3. single spring or ... you for checking the quality. GoodsValve oil sealModelCG125, CD70,etc.Regular colorBrown, green, blue,etc.Oil seal MaterialNBR, FKM, etc.Spring ...