... seal: 1. type: valve oil seal, wiht one or two spring 2. many models: ... , FKM with stainless steel framework 2.feature: excellent resistance against high-temperature, abrasion, oil, corrosion, and ageing, and superior sealing effect3 ... yours requirementOEM serviceAvailableFeaturesGood sealing, durablePackingbag, blister card , or as required High Quality Valve Stem oil seal for motorcycle