This specification covers virgin, unfilled
polytetrafluoroethylene (PTFE) in the form of sheet, manufactured
by compression molding and sintering.
This sheet has been used typically for machined parts requiring
chemical inertness up to 500 °F (260 °C), with better mechanical
properties and/or electrical properties than AMS3667, but usage is
not limited to such applications.
Sheet covered by this specification is classified as
Type 1 For parts requiring chemical inertness and good
mechanical and electrical properties up to 500 °F (260 °C). Testing
of all specified properties is required.
Type 2 For parts requiring chemical inertness and good
mechanical properties up to 500 °F (260 °C), where electrical
insulation is not a consideration. Dielectric strength test (3.3.4)
is not required.
Unless a specific type is ordered, Type 1 shall be supplied.
Safety - Hazardous Materials
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