3M™ Aerospace Sealant AC-240

  • Long application life
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Application Life
2 Hour, 30 Minute
Aircraft Maintenance & Production Efficiency, Aircraft Sustainability, Aviation Safety Enhancement
Cure Type
Fast Cure
Defense Products Market Segments
Product Color
Product Form
Product Key
Product Volume
2 Ounce
Storage Environment
Room Temperature
Product Details
  • Long application life

3M™ Aerospace Sealant AC-240 Class B are two-part, polysulfide-based, long application life, quick cure product for use as a sealant for integral fuel tanks and fuselages. 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-240 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 has a thixotropic non-sag consistency and can be readily applied with a spatula or extrusion gun or vertical surfaces.