It is a two component gun grade polysulphide sealant which, when mixed together, cures to form a flexible rubber seal. It gives
excellent adhesion to glass, metals, concrete, masonry, wood, plastics, and many other building substrates. Complies BS : 4254 :
1983,15: 12118 (PT 1 & 2) – 1987 and ASTM C-920-87, Type M.