... ~30Specific Gravity (Kg/M3)12~18PRODUCT DESCRIPTIONGNS General Purpose PU Foam A22 is a one-component, ready to use multi-purpose ... Polyurethane foam. It is fitted with a plastic adaptor head for use ... a wide variety of surfaces such as UPVC, masonry, brick, block work, glass, steel, aluminum, timber and other substrates (except PP ...