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SAE AMS3660 Revision E, August 1, 2011
Polytetrafluoroethylene (PTFE) Moldings General Purpose Grade, As Sintered
Description / Abstract:
Form
This specification covers virgin, unfilled polytetrafluoroethylene (PTFE) in the form of molded rods, tubes, and shapes. This specification does not apply to product over 12 inches (305 mm) in dimension parallel to the direction of applied molding pressure, rods under 0.750 inch (19.05 mm) in diameter, and tubes having wall thickness under 0.500 inch (12.70 mm).
Application
These moldings have been used typically for parts such as, bushings and insulators, requiring chemical inertness and good mechanical and electrical properties up to 500 °F (260 °C), but usage is not limited to such applications. For applications such as bearings, seals, and back-up rings that do not require dielectric properties it is recommended to use AMS3678/1 Grade A.
Safety Hazardous Material
While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.
Types 1 and 2, which were defined in previous revisions of this specification, have been combined. For documentation which specifies Type 1 or Type 2 of this specification, all of the requirements of this specification now apply.
This specification covers virgin, unfilled polytetrafluoroethylene (PTFE) in the form of molded rods, tubes, and shapes. This specification does not apply to product over 12 inches (305 mm) in dimension parallel to the direction of applied molding pressure, rods under 0.750 inch (19.05 mm) in diameter, and tubes having wall thickness under 0.500 inch (12.70 mm).
Application
These moldings have been used typically for parts such as, bushings and insulators, requiring chemical inertness and good mechanical and electrical properties up to 500 °F (260 °C), but usage is not limited to such applications. For applications such as bearings, seals, and back-up rings that do not require dielectric properties it is recommended to use AMS3678/1 Grade A.
Safety Hazardous Material
While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibility of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved.
Types 1 and 2, which were defined in previous revisions of this specification, have been combined. For documentation which specifies Type 1 or Type 2 of this specification, all of the requirements of this specification now apply.
SAE AMS3660 Revision E, August 1, 2011
Polytetrafluoroethylene (PTFE) Moldings General Purpose Grade, As Sintered