3M AC-360 Class B-1/2 Aerospace Sealant

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3M AC-360 Class B-1/2 Aerospace Sealant
Categories:	Polymer; Thermoset; Polysulfide Sealant/Adhesive
Material Notes:	3M Aerospace Sealant AC-360 Class B are fast cure, intermediate density two-component, manganese dioxide cure, polysulfide fuel tank and fuselage sealant. 3M AC-360 Class B Sealants 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-360 Class B Sealants maintain flexibility and bond strength on most metal substrates such as aluminum, titanium, steel, stainless 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. It has excellent tooling properties. Information provided by 3M
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Physical Properties	Original Value	Comments

Density	<= 1.40 g/cc	cured 14 days @ 50% RH
Volatiles	2.0 %
Brookfield Viscosity	750000 - 1.10e+6 cP	Base, RVF #7 sp @ 2 rpm

Mechanical Properties	Original Value	Comments
Hardness, Shore A	50 - 55	cured 14 days @ 50% RH
Tensile Strength at Break	1.10 MPa	7 days in BMS-3-11 ty IV
	1.90 MPa	Standard Cure
	2.07 MPa	7 days JRF
Elongation at Break	550 %	Standard Cure
	780 %	7 days JRF
	800 %	7 days in BMS-3-11 ty IV

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	121 °C	cured 14 days @ 50% RH
	182 °C	Short term, cured 14 days @ 50% RH
Minimum Service Temperature, Air	-54.0 °C	cured 14 days @ 50% RH

Processing Properties	Original Value	Comments
Cure Time	2.00 - 3.00 hour
Tack-Free Time	2.00 - 3.00 hour
Shelf Life	6.00 Month @Temperature <=26.7 °C

Descriptive Properties
Appearance	Brown	Accelerator
	Dark Brown
	Off White	Base

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PMM35394 / 170141

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