3M® Aerospace Sealant Ac-350 B-1/2 Kit, 3.5oz 051141-58043

3M™ Aerospace Sealant AC-350 Class B are fast cure, intermediate density polysulfide sealant suitable for fuel tank and fuselage applications. These two-component, manganese dioxide cured sealants are solvent free and have outstanding resistance to aviation gasoline and jet fuel, as well as resistance to chemicals and petroleum products common to the aircraft industry. 3M AC-350 Class B Sealants maintain 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 is a thixotropic paste easily applied by extrusion, injection gun or spatula, and exhibits superb tooling properties. Part number 051141-58043 has a minimum application time of 30 minutes. 3M™ AC 350B2 class B non-sag aerospace sealant comes in two parts which includes part-A catalyst and part-B base. The liquid part-A catalyst is brown in color, while the paste part-B base is off-white in color. With greater than or equal to 200 degrees F flash point, the slight odored part-A catalyst has a specific gravity greater than or equal to 1.58 and VOC contents of 3 grams per liter. With greater than 230 degrees F flash point, the sulfurous odored part-B base has a specific gravity of 1.35 and VOC contents of 2.9 grams per liter. This sealant is supplied in a 3.5-ounce container and can be mixed in a 100 base/10 catalyst ratio by weight to form a dark gray color mixture. It requires 2 hours for application and will be sufficiently cured after 7 to 8 hours. The product withstands a temperature range of -65 to 250 degrees F.