... oil seal, wiht one or two spring 2. many models: CG125, JH70, GY6,AX100,etc 1.material: NBR, FKM with stainless steel framework ... abrasion, oil, corrosion, and ageing, and superior sealing effect3. single spring or double spring for your choice4. packing: 2pcs ... for checking the quality. GoodsValve oil sealModelCG125, CD70,etc.Regular colorBrown, green, blue,etc.Oil seal MaterialNBR, FKM, etc.Spring ...