Valve stem oil seal: 1. type: valve oil seal, wiht one or two spring 2. many models: CG125, JH70, GY6,AX100,etc ... 1.material: NBR, FKM with stainless steel framework 2.feature: excellent resistance against high-temperature, abrasion, oil, corrosion, and ageing, ... serviceAvailableFeaturesGood sealing, durablePackingbag, blister card , or as required High Quality Valve Stem oil seal for motorcycle