This specification covers one type of a nonmelting, heat stable silicone compound for use in high tension electrical connections, ignition systems and electronics equipment; for application to unpainted mating threaded or non-threaded surfaces, and as a lubricant for components fabricated from rubber. This compound is effective in the temperature range from -54°C (-65°F) to +204°C (+400°F) for extended periods and to 260°C (500°F) for short periods. This compound is identified by NATO symbol S-736 (see 6.5).
Rationale: AMS8660 was issued April 2018 to supersede AS8660, originally issued in July of 1999. In 1999, AS8660 was taken directly from U.S. Military Specification MIL-S-8660C, Amendment 1 and contains only minor editorial and format changes required to bring it into conformance with the publishing requirements of SAE technical standards. Revisions in the initial release of AMS8660 include updates to referenced standards, required testing, and testing procedures to current methods. It is the recommendation of AMS-M to Cancel AS8660 with suppression to AMS8660.