1.Description:Top Best 653 Polyurethane Sealant is one part, and known for being elastic, anti corrosion, weather resistant, etc. It cures on exposure to atmospheric humidity to form a permanent watertight seal. Top Best 653 Polyurethane Sealant is flexible so that it allows movement, will not damage metal coatings and is ideal forsealing joints in caravans. It can be used to bond dissimilar materials together (metal, Wood, Glass, GRP, Plastics etc) 2.Application:Top Best 653 is a multipurpose Sealant designed for the build and repair of caravans motorhomes and trailers, while bonds and seals in one. It is a professional grade one part polyurethane hybrid that can be used externally and internally and bonds and seals in one operation. This butyl is used as a watrseal for sealing joints on roofs, panels, mouldings, rooflights and service inlet points.
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