vehicle tires can not avoid being punctured by nail or other sharp objects or avoid leaking due to normal aging or outside object over the wheel rim.our ”self-sealing agent” is used as a pretreatment before puncture occurs or used as reinforcement after repair, its special materials, including micro sheets, micro strips, micro granules, micro powder, and filmily liquid, can effectively block the leak as soon as it’s occurs and soon form a plug and leak-proof film to seal the puncture.