3M AC-370 Class B-2 Aerospace Sealant

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3M AC-370 Class B-2 Aerospace Sealant
Categories:	Polymer; Thermoset; Polysulfide Sealant/Adhesive
Material Notes:	3M Aerospace Sealant AC-370 Class B are fast cure, low density polysulfide sealants 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 product common to the aircraft industry. 3M AC-370 Class B Sealants maintain flexibility and bond strength on most metal substrates like aluminum, titanium, stainless steel, steel, 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. They have excellent tooling properties. Information provided by 3M
Vendors:

Available Properties

Density, cured 14 days @ 50% RH
Volatiles
Brookfield Viscosity, RVF #7 sp @ 2 rpm
Hardness, Shore A, cured 14 days @ 50% RH
Tensile Strength at Break, 12 days @ 60°C + 60 hrs @ 71°C + 6 hrs @ 82°C in JRF I
Tensile Strength at Break, Standard Cure
Tensile Strength at Break, Standard heat cycle (AMS)
Tensile Strength at Break, 12 days @ 60°C + 60 hrs @ 71°C + 6 hrs @ 82°C in JRF I + 24 hrs air dry @ 49°C + standard heat cycle (AMS)
Tensile Strength at Break, 72 hrs at standard temperature in AMS 3021
Tensile Strength at Break, 72 hrs at standard temperature in AMS 3020
Elongation at Break, Standard heat cycle (AMS)
Elongation at Break, 12 days @ 60°C + 60 hrs @ 71°C + 6 hrs @ 82°C in JRF I + 24 hrs air dry @ 49°C + standard heat cycle (AMS)
Elongation at Break, 12 days @ 60°C + 60 hrs @ 71°C + 6 hrs @ 82°C in JRF I
Elongation at Break, Standard Cure
Elongation at Break, 72 hrs at standard temperature in AMS 3021
Elongation at Break, 72 hrs at standard temperature in AMS 3020
Maximum Service Temperature, Air, cured 14 days @ 50% RH
Maximum Service Temperature, Air, Short term, cured 14 days @ 50% RH
Minimum Service Temperature, Air, cured 14 days @ 50% RH
Cure Time
Tack-Free Time
Shelf Life

Property Data

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Manufacturer Notes:
none

Category Notes
Plastic

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