Glass Fiber-Filled PTFE
Glass fiber increases the wear and creep resistance of PTFE. It is the most common PTFE filler. Glass fiber-filled PTFE materials can be used in oxidizing environments, but be aware that glass fiber reacts with HF and strong bases.
Glass fiber-filled PTFE materials have a slightly higher coefficient of friction but better extrusion resistance than Glass fiber/Moly filled PTFE materials. They are typically used in seal components for dynamic applications. They also prefer a lubricated environment and are used to seal against steel, stainless steel, and chromium-plated surfaces.
PBY Material Codes:
PB10302G - 15% Glass Fiber Filled PTFE
PB10305T - 25% Glass Fiber Filled PTFE
|Property||Test Method||Units||15 Glass Fiber||25 Glass Fiber|
|Specific Gravity||ASTM D792||-||2.150 - 2.250||2.150 - 2.250|
|Hardness Shore D||ASTM D2240||-||60 - 70||60 - 70|
|Tensile Strength, min.||ASTM D4745||PSI [MPa]||2,840 [19.6]||2,270 [15.7]|
|Elongation at Break, min.||ASTM D4745||%||220||180|
|Second Melt Peak Temp.||ASTM D3418||°F [°C]||621 ||621 |
|Glass Transition Temp.||ASTM D3418||°F [°C]||-143 [-97]; 246 ||-143 [-97]; 246 |
Glass Fiber Filled PTFE Properties
Increases wear and creep resistance
Chemically Inert (Exceptions in HF and Strong Bases)
Performs well in oxidizing environments
Cookware coatings and rotating platforms
Containers and pipelines for chemicals
PB10302G meets ASTM D4547 Type I Grade I requirements.
PB10305T meets ASTM D4745 Type I Grade 2 and AMS 3678/4 requirements
PB10302G - Material Data Sheet
PB10305T - Material Data Sheet
- Wypych, George. Handbook of Polymers. 2nd Ed., ChemTec/Publishing, 2016.
- Ebnesjjad, Sina. Fluoroplastics Vol1 & Vol2. 2nd Ed., Elsevier Inc., 2015.
- Aerospace Materials Specifications for PTFE materials (AMS3678)
- American Society for Testing and Materials (ASTM) Standards