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Revision D, November 1, 2013

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Sealing Compound Aircraft Firewall, Silicone

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Product Details:

  • Revision: Revision D, November 1, 2013
  • Published Date: November 2013
  • Status: Active, Most Current
  • Document Language: English
  • Published By: SAE International (SAE)
  • Page Count: 9
  • ANSI Approved: No
  • DoD Adopted: Yes

Description / Abstract:


This specification covers six (6) types of silicone sealing compounds curing to elastomeric materials.


These products are used primarily for sealing aircraft firewall 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 are able to withstand flash temperatures of up to 2000 °F (1093 °C).

Safety - Hazardous Materials

Shall be in accordance with AS5502 (1.1) 

Classification Compounds covered by this specification are classified as follows:

Type 1 - One-part (or two part, pre-mixed, room temperature stable) high temperature silicone, condensation cured

Type 2 - Two-part high temperature silicone, addition cured

Type 3 - Two-part high temperature silicone, condensation cured

Type 4 - Two-part high temperature silicone, rapid curing, condensation cured

Type 5 - One-part high temperature silicone, condensation cured, extended life

Type 6 - Two-part high temperature silicone, lightweight, rapid curing, addition cured

AIA/NAS Aerospace Standards