AMS 3374 REV D TYPE 1 SAE AMS3374, Revision F, May 2019 – Sealing Compound Aircraft Firewall, Silicone form This specification covers six silicone sealant compounds that cure with elastomeric materials. Application These products are to be used to seal aircraft security door structures against air, steam and flame penetration, but use is not straightforward with such applications. Sealing compounds are effective at all temperatures from -65 to +400°F (-54 to +204°C) and can withstand flash temperatures up to 2000°F (1093°C). Safety – Hazardous Substances It shall comply with AS5502 (1.1).