This specification covers virgin, unfilled polytetrafluoroethylene (PTFE) in the form of extruded rods, tubes, and profiles. These products have been used typically for parts, such as bushings and insulators, requiring better chemical inertness and dimensional stability up to 500 °F (260 °C) than AMS 3657 and better mechanical and electrical properties than AMS 3656, but usage is not limited to such applications. For spplications such as bearings, seals, and back-up rings that do not require dielectric properties it is recommended to use AMS 3678/1 Grade B.
SAE AMS3659F-2011 Referenced Document
ASTM D149-09 Standard Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies*, 2024-04-19 Update
ASTM D4894-07 Standard Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Ram Extrusion Materials*, 2024-04-19 Update
ASTM D792-08 Standard Test Methods for Density and Specific Gravity (Relative Density) of Plastics by Displacement*, 2024-04-19 Update
SAE AMS3656 POLYTETRAFLUOROETHYLENE RODS AND TUBES, EXTRUDED TFE Fluorocarbon Resin As Sintered
SAE AMS3657 POLYTETRAFLUOROETHYLENE EXTRUSIONS Premium Strength, As Sintered, Radiographically Inspected
SAE AMS3678-1999 Polytetrafluoroethylene (PTFE) Moldings and Extrusions Unfilled, Pigmented, and Filled Components
SAE AMS3659F-2011 history
2011SAE AMS3659F-2011 Polytetrafluoroethylene (PTFE) Extrusions, Premium Strength, Sintered and Stress-Relieved