CRL 44NC Neutral Cure Automotive Silicone Sealant cures very quickly and is a neutral cure silicone with additives that improve adhesion for sealing and weatherstripping use in vehicles. While this silicone sealant cradles the glass to absorb typical vehicle vibrations, leaks are prevented. Application of this silicone caulk is easy with its primerless adhesion qualities when applies to surfaces such as aluminum, stainless steel, plastics, tin, glass, silicone gaskets, hardened pvc, tin, iron, ceramics and chromium. Silicone sealing applications include sunroof installations, vinyl and simulated convertible top installations and repair, van windows, roof vents and other specialty openings. CRL 44NC Neutral Cure Automotive Silicone Sealant will keeps its elasticity for at least 20 years when applied properly and under normal conditions.