... Gravity (Kg/M3)12~18PRODUCT DESCRIPTIONGNS General Purpose PU Foam A22 is a one-component, ready to use multi- ... sealing of gaps, joint, openings and cavities.• Connecting of insulation materials and roof construction.• Bonding and mounting.• Insulating the electrical ... such as UPVC, masonry, brick, block work, glass, steel, aluminum, timber and other substrates (except PP, PE and Teflon).Good ...