3M Aerospace Sealant AC-240 B-1/2, Pint Kit | 3M Industrial

3M Aerospace Sealant AC-240 Class B is a two-part, polysulfide-based, long application life, quick cure product for use as a sealant for integral fuel tanks and fuselages. This two component, manganese dioxide cured sealant is solvent free and has outstanding resistance to aviation gasoline and jet fuel, as well as resistance to chemicals and petroleum products common to the aircraft industry. 3M Aerospace Sealant AC-240 Class B maintains flexibility and bond strength on most metal substrates such as: aluminum, titanium, steel, stainless steel, glass, and many coatings under extremes of temperature, weathering and stress. The mixed compound has low-sag consistency and can be readily applied with a spatula or extrusion gun on vertical surfaces. 3M meets AC240B1/2, AMS-S8802.