Sealing Compound, Flame Resistant, Non-Silicone
|Publication Date:||1 October 2020|
This specification covers non-silicone synthetic rubber sealing compounds supplied as a two-component system that cures at room temperature.
These products are used primarily for sealing aircraft structures against passage of air, vapors, and flames, but usage is not limited to such applications. The sealing compounds are effective at all temperatures from -65 to 400 °F (-54 to 204 °C) and can withstand flash temperatures of up to 2000 °F (1093 °C). Sealants qualified to this specification are defined as flame resistant and can prevent flame penetration from incidental exposure to smaller fires. Users should evaluate their specific flame-resistant requirements prior to specifying any sealing compound. The ultimate determination of acceptability should be based on the ability of the sealant to withstand exposure to the flame without resulting in a condition that will further increase hazard to the aircraft. If it is intended to use these products for aircraft firewall structures, users are advised to evaluate their design to the applicable FAR requirements of FAA AC 20-135.
Safety - Hazardous Materials
Shall be in accordance with AS5502 (1.1).