本文件已于2011年2月宣布“取消”，并已被AMS 3374取代。通过这一行动，本文件仍将列在航空航天标准索引的数字部分，并指出其已被AMS 3374取代。本规范涵盖两部分加成固化耐高温硅酮密封化合物。该产品主要用于密封飞机防火墙结构，防止空气和蒸汽通过。固化化合物应在-65至+400华氏度（-654至+204摄氏度）的所有温度下保持有效密封剂，并应能承受2000华氏度（1093摄氏度）的闪蒸温度。

This document has been declared "CANCELLED" as of February 2011 and has been superseded by AMS 3374. By this action, this document will remain listed in the Numercial Section of the Aerospace Standards Index noting that it is superseded by AMS 3374.This specification covers two-part, addition cured, high temperature resistant silicone sealing compounds.This product is used primarily for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 degrees F (-654 to +204 degrees C) and shall be able to withstand a flash temperature of 2000 degrees F (1093 degrees C).