AV515 BOSTIK 300ML CARTRIDGE Polyurethane Adhesive AV 515 is a single component, solvent-free, thixotropic, quick setting, moisture cured polyurethane adhesive. Fully cured AV 515 has an extremely strong bond with excellent resistance to water. AV 515 is suitable for bonding porous to porous and porous to non-porous substrates. AV 515 may be used to bond timber, plasterboard, fibrous cement, some metals, EPS foam, concrete, brick, some plastics (testing is recommended) and many other common substrates, providing that one or two of the surfaces contain moisture. AV 515 is ideal for bonding timber in applications such as furniture and can be used with softwoods and many hardwoods.