Silicone expands in the heat and contracts in the cold, so it can only be used as a sealant to repair leaks in the windshields. Let us briefly look at salient features of different types of materials used during windshield installations : As technology progressed, improved adhesives like Polyurethane (commonly known as Urethane) started replacing other traditional ones. In the beginning, sealants like silicone and other variants of it were used for the windshields along with Acrylic. The purpose of an adhesive is to bind two different bodies together while the aim of a sealant, on the other hand, is to block the entry of water, and it is very important to differentiate between these two.
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The choice of adhesives and sealants depends on the size of the vehicle (car, bus, construction or agricultural machinery, etc.) and should be made by a professional auto glass expert. There are several types of windshield adhesives and sealants available in the market, namely: Silicone, Polyurethane, Modified Silicone, Butyl, and Acrylic. The main feature of any adhesive is the strength with which it holds the windshield in a crash, keeping the occupants safe from any glass damage. It is crucial to use the best quality of adhesives that can withstand extreme temperatures and maintain elasticity. Windshields are held in their place firmly with the help of adhesive materials that are mainly put between the frame and laminated glass.
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