Sealing Compound, Polythioether Nonchromated, Corrosion Inhibiting for Intermittent Use to 360°F (182°C)
- Aerospace Material Specification
- AMS3259B
- Cancelled
Scope
This specification covers a polythioether sealing compound with nonchromated corrosion inhibitors supplied as a two-component system which cures at room temperature.
The compound has been used typically for faying surface sealing and for wet-installation of fasteners in aircraft structural joints, but usage is not limited to such applications. This compound is also suitable for fillet sealing and overcoating fasteners in nonfuel areas. The sealing compounds are usable from -65 to +320 degrees F (-54 to +160 degrees C) with short term (six hour) exposures up to 36 degrees F (182 degrees C).
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Data Sets - Support Documents
Issuing Committee
AMS G9 Aerospace Sealing Committee
AMS Committee G9, Aerospace Sealing, is primarily responsible for the preparation, revision, and review of documents related to the sealing of aerospace vehicles for fluid containment and environmental protection by the use of sealants which are applied and cured to solid materials or are permanently mastic. Common sealant application examples include the sealing of integral fuel tanks, fuel bladder cavities, crew and passenger areas, access doors, fasteners, avionics compartments, windshields, and firewalls. The committee shall discuss sealing material and process developments, material property requirements, test methods, the effect of the environment on cured and uncured sealant materials and their containers, and emerging sealant industry challenges. The committee has dedicated subcommittees to address elastomeric aircraft fuel bladders, new sealant specification requirements, surface preparation for sealing, and sealant application and removal technologies.