Standard

SAE AMS3281G

Published

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Abstract

Form This specification covers three types and three classes of fuel-resistant polysulfide sealing compound with low specific gravity, supplied as a two-component system which cures at room temperature. Application This sealing compound has been used typically in sealing aircraft integral fuel tanks, fuel tank fillets and faying surfaces, pressure barriers and moldline surfaces, but usage is not limited to such applications. The sealing compound is resistant to jet fuels and is capable of withstanding long-term exposure from -65 to +250 °F (-54 to +121 °C) and short-term exposures (approximately 6 hours, cumulative) to 360 °F (182 °C), but usage is not limited to such applications. AMS3100 adhesion promoter may be applied prior to application of the sealant in accordance with recommendations from the sealant manufacturer for specific substrates. Classification Sealing compounds covered by this specification are classified as follows: Types Type 1 - Sealing compound with a specific gravity of 1.20 to 1.35. Type 2 - Sealing compound with a specific gravity of 1.06 to 1.19. Type 3 - Sealing compound with a specific gravity of 1.05 or less. Classes Class A - Suitable for application by brushing, injecting, or spraying. Available with the following application times in hours: A-1/2 A-2 Class B - Suitable for application by extrusion gun or spatula. Available with the following application times in hours: B-1/2 B-2 Class C - Suitable for faying surface or shim sealing, brush coating, or wet installation. Available with the following application times in hours: Notation: ( ) Assembly time in hours. C-2(2) C-8(24) C-12(48) C-48(168) C-96(336) Safety - Hazardous Materials Shall be in accordance with AS5502 (1.1).

Document information

  • Standard from SAE_AC
  • Published:
  • Version: 0
  • Document type: IS