COSTA EXPANSEAL 200 is a two-component poly-sulphide joint sealant which, when the Part A and B components are mixed together leads to a chemical reaction, which cures to a firm, flexible rubber like seal with excellent adhesion to concrete, masonry, wood, glass, acrylic, stone, metal and many other common building substrates. It is very flexible and has good chemical resistance.
Costar Expanseal 200 is available in gun and pouring grades. The gun grade is ideal for general application while the pouring grade is ideal for joints in horizontal surfaces.