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SAE AMS3279
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SAE AMS3279 Revision D, March 1, 2013
Sealing Compound, Sprayable For Integral Fuel Tanks and Fuel Cell Cavities,
For Intermittent Use to 350 °F (177 °C)
Description / Abstract:
Form
This specification covers one type of sprayable fuel resistant polythioether sealing compound supplied as a two-component system
Application
This sealing compound has been used typically for sealing metal and composite integral fuel tanks by spray application, but usage is not limited to such applications. It can be sued for original fuel tank sealing of seams, joints, fasteners and fay surface edges or for repair of conventional fillet and fastener seals. As a fuel containment barrier, it can also be used on the interior or exterior of auxiliary fuel cell cavities. It can be cured at ambient temperatures or with mild heat up to 140 ºF (60 ºC) following an initial 4 to 5 hour ambient cure period after each coating application. A primer, specified by the sealant manufacturer, is required with the sealing compound and must be applied prior to sealing. The sealing compound can be applied in fuel tank and non-fuel tank areas by the use of a spray gun. Sealant can be applied by brush for small touch-up areas. The sealing compound is usable long term for -65 to 250 ºF (-54 to + 121 ºC), with short term exposure (approximately 6 hours) to 350 ºF (171 ºC)
Classification
The sealing compound shall be usable for spray application and shall be supplied on the following types:
Type A – White
Type B – Black
Type C – Clear
This specification covers one type of sprayable fuel resistant polythioether sealing compound supplied as a two-component system
Application
This sealing compound has been used typically for sealing metal and composite integral fuel tanks by spray application, but usage is not limited to such applications. It can be sued for original fuel tank sealing of seams, joints, fasteners and fay surface edges or for repair of conventional fillet and fastener seals. As a fuel containment barrier, it can also be used on the interior or exterior of auxiliary fuel cell cavities. It can be cured at ambient temperatures or with mild heat up to 140 ºF (60 ºC) following an initial 4 to 5 hour ambient cure period after each coating application. A primer, specified by the sealant manufacturer, is required with the sealing compound and must be applied prior to sealing. The sealing compound can be applied in fuel tank and non-fuel tank areas by the use of a spray gun. Sealant can be applied by brush for small touch-up areas. The sealing compound is usable long term for -65 to 250 ºF (-54 to + 121 ºC), with short term exposure (approximately 6 hours) to 350 ºF (171 ºC)
Classification
The sealing compound shall be usable for spray application and shall be supplied on the following types:
Type A – White
Type B – Black
Type C – Clear
SAE AMS3279 Revision D, March 1, 2013
Sealing Compound, Sprayable For Integral Fuel Tanks and Fuel Cell Cavities,
For Intermittent Use to 350 °F (177 °C)