... money 4,No post expansion after cured GNS A22 General Purpose PU Foam1,General Purpose2,Cost Effective3,Value for money4,No post ... ) (900g/750ml)25~30Specific Gravity (Kg/M3)12~18PRODUCT DESCRIPTIONGNS General Purpose PU Foam A22 is a one-component, ready to ... such as UPVC, masonry, brick, block work, glass, steel, aluminum, timber and other substrates (except PP, PE and Teflon).Good filling ...