Standard:

• AMS3668
• Revision: C

Reaffirmed:

• 2003-05-09

Revised:

• 1994-02-01

Revision:

• Historical. Access the latest revision: AMS3668E

Issuing:

• Ams P Polymeric Materials Committee

Scope:

This specification covers two types of 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 length, rods under 0.750 inch (19.05 mm) in diameter, and tubes having wall thickness under 0.500 inch (12.70 mm).

These moldings have been used typically for parts requiring chemical inertness up to 260 degrees C (500 degrees F), and better mechanical and/or electrical properties than AMS 3660, but usage is not limited to such applications.

History:

Standard	Published	Revision	Status
AMS3668E	2011-08-25	Latest	Stabilized
AMS3668D	2010-05-17	Historical	Revised
AMS3668C	1994-02-01	Historical	Reaffirmed
AMS3668B	1991-10-01	Historical	Reaffirmed
AMS3668A	1976-07-01	Historical	Revised
AMS3668	1967-04-01	Historical	Issued

AKA:

• SAE AMS 3668

Sector:

• Aerospace

Topic:

• Fabrics
• Polymers
• Plastics
• Materials properties
• Textiles