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What is the best type of sealant for sealed glass units?

The best type of sealant depends on the application. Polysulphide sealant is widely used due to its strong chemical bond to glass, making it highly durable. Hotmelt sealant is a cost effective thermoplastic option that provides flexibility in manufacturing. At Glasscraft, we use both Polysulphide sealant and Hotmelt sealant with PIB for superior performance and longevity.