3M AC-251 Gray Class B-1/2 Aerospace Sealant

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3M AC-251 Gray Class B-1/2 Aerospace Sealant
Categories:	Polymer; Thermoset; Polysulfide Sealant/Adhesive
Material Notes:	3M Aerospace Sealant AC-251 Gray Class B are two-part, quick curing, polysulfide based canopy and windshield sealants. These products are formulated for sealing acrylic, glass, and polycarbonate aircraft canopies and windshields. 3M AC-251 Gray Class B Sealants contain no solvents and do not craze. The sealants quickly cure and exhibit excellent adhesion and resistance to UV and weather exposure. 3M AC-251 Gray Class B Sealants have a thixotropic, non-sag consistency. They can be readily applied with a spatula or extrusion gun on vertical surfaces. Information provided by 3M
Vendors:

Available Properties

Density, AMS-S-8802, cured 14 days @ 50% RH
Volatiles
Brookfield Viscosity, Base, RVF #7 sp @ 2 rpm
Hardness, Shore A, AMS-S-8802, cured 14 days @ 50% RH
Tensile Strength at Break, Standard Cure
Tensile Strength at Break
Elongation at Break, Standard Cure
Elongation at Break
Maximum Service Temperature, Air, AMS-S-8802, cured 14 days @ 50% RH
Maximum Service Temperature, Air, AMS-S-8802, cured 14 days @ 50% RH
Minimum Service Temperature, Air, AMS-S-8802, 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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