Delta Tru Flex 40FC Black 310ml Cartridge Polyurethane Sealant and Adhesive (RTV Cure) is a very high quality product, allowing minimum shrinkage and offers a very high degree of flexiblity. It will remain permanently elastic after cure and has an excellent adhesion to many substances with a good resistance to where vibration may occur. Weatherproof and resistant to many chemicals. It will seal and bond steel, aluminium, stainless steel, wood, concrete, plastics, fibreboard, fibreglass etc. Used widely in automotive, marine, electrical and construction sectors.