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SAE AMS3374/2 Revision A, February 1, 2011
Complete Document
Superseded By: SAE AMS3374
Sealing Compound Two-Part, Addition Cured Silicone (Type 2) Firewall Sealant
Includes all amendments and changes through Cancellation Notice , February 2011
Additional Comments: CNCL S/S BY SAE AMS3374
Page Count:5
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AIA/NAS Aerospace Standards

This specification covers two-part, addition cured, high temperature resistant silicone sealing compounds.


This product is used primarily for sealing aircraft firewall structures against passage of air and vapors. The cured compound shall remain an effective sealant at all temperatures between −65 and +400 °F (−54 to +204 °C) and shall be able to withstand a flash temperature of 2000 °F (1093 °C).