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Sikaflex Pro-3 Purform is a one part, moisture curing, elastic polyurethane sealant which comes in 600ml Foil packs. Colour- Black. This polyurethane sealant seals many a variety of joint configurations in floors and civil engineering structures.  Elasticity is maintained over a wide temperature range and high mechanical and chemical resistance provides good durability.  Designed for both internal and external applications.