3M AC-275 Class B-4 Aerospace Sealant

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3M AC-275 Class B-4 Aerospace Sealant
Categories:	Polymer; Thermoset; Polysulfide Sealant/Adhesive
Material Notes:	3M Aerospace Sealant AC-275 Class B is a high temperature two-component manganese dioxide cured, liquid polysulfide polymer sealants providing excellent fuel tank and fuselage seals. They have outstanding resistance to aviation gasoline and jet fuel, as well as resistance to chemicals and petroleum products common o the aircraft industry. 3M AC-275 Class B Sealants maintain flexibility and bond strength on most metal substrates like aluminum, 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, AMS3276, cured 14 days @ 50% RH
Volatiles
Brookfield Viscosity, Accelerator, RVF #10 sp @ 2 rpm
Brookfield Viscosity, Base, RVF #7 sp @ 2 rpm
Hardness, Shore A, AMS3276, cured 14 days @ 50% RH
Tensile Strength at Break, AMS3276, JRF-12 days @ 60°C + 60 hrs @ 71°C + 6 hrs 82°C
Tensile Strength at Break, AMS3276, Std Heat Cycle
Tensile Strength at Break, AMS3276, Standard Cure - 14 days
Tensile Strength at Break, AMS3276, JRF-12 days @ 60°C + 60 hrs @ 71°C + 6 hrs 82°C + 24 hrs @ 49°C + Std Heat Cycle
Elongation at Break, AMS3276, Std Heat Cycle
Elongation at Break, AMS3276, JRF-12 days @ 60°C + 60 hrs @ 71°C + 6 hrs 82°C + 24 hrs @ 49°C + Std Heat Cycle
Elongation at Break, AMS3276, JRF-12 days @ 60°C + 60 hrs @ 71°C + 6 hrs 82°C
Elongation at Break, AMS3276, Standard Cure - 14 days
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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