PTFE filled per ASTM D4745-91 This item was sourced on www.MFG.com as one of the items in an RFQ in CANADA for Thermoplastics Raw material to fabricate washers - for JSF PROGRAM door uplock assy. URGENT Part Part Number: astm d4745-91 Material: Thermoplastic Material Grade: Technical Specifications Category:Thermoplastics Dimensions0.0 x 0.0 inch Annual Usage:10.0 The following suppliers (machine shops, fabricators, casters, molders, 3D printing, CNC machining, etc.) provide manufacturing services and are members of the MFG.com community. For more information visit http://www.mfg.com. MFG.com performs a 5-point inspection on all engineered parts and RFQs to ensure quality and enhance your quoting experience Thermoplastics: Thermoplastic materials are hard when cool and can be repeatedly made soft when heated.