SAE Standards Works
AMS G9 Aerospace Sealing Committee
AMS3277H - Sealing Compound, Polythioether Rubber, Fast Curing for Integral Fuel Tanks and General Purpose, Intermittent Use to 360 °F (182 °C)
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Sealing Compound, Polythioether Rubber, Fast Curing for Integral Fuel Tanks and General Purpose, Intermittent Use to 360 °F (182 °C)
This specification covers polythioether rubber fuel resistant sealing compounds supplied as a two-component system which cures at room temperature.
Replace B-2 sealant allowance for accelerated cure for acceptance testing – was inadvertently removed in last revision. Increase B-1/2 cure time for fluid rupture testing from 2 hours (per AS5127/1 (7.3)) to 3 hours to match tack free time. Add reference to ASTM D4214 for chalking test method to clarify pass/fail requirement. Remove Air Content requirement from spec IAW G-9 Committee vote.