3M AC Tech AC-350 B-1/2 Fuel Tank Sealant - 3.5 Oz. Cartridge

3M™ AC-350 B-1/2 is a two-part, fast-curing polysulfide aerospace sealant supplied in a 3.5 oz (approximately 100 g) cartridge. When mixed, the Class B material forms a thixotropic, non-sag paste for application by cartridge applicator or spatula.

Designed by 3M for aircraft integral fuel tank and fuselage sealing applications, AC-350 Class B sealants are formulated to resist aviation fuels and petroleum chemicals commonly encountered in aerospace service. The solvent-free formulation is designed to retain its shape and volume during cure.

• Manufacturer: 3M
• Manufacturer part number: 7000123232
• Sealant class: B-1/2
• Cartridge content: 3.5 oz (approximately 100 g)
• Mixed colour: dark brown
• Typical application time: 30 minutes at 25 °C and 50% relative humidity
• Typical tack-free time: 3–4 hours; cure to minimum 30A hardness: less than 4 hours, under the same stated conditions

Refer to the current 3M Technical Data Sheet and Safety Data Sheet before use. Confirm material suitability, applicable specifications and approved maintenance data for the specific aircraft or component application.