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:
PB10302 - 15% Glass Fiber-Filled PTFE
PB10305 - 25% Glass Fiber-Filled PTFE
Glass Fiber-Filled PTFE Spec. Summary
|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 |
Material Available In:
Glass Fiber-Filled PTFE Rods
Glass Fiber-Filled PTFE Tubes
Glass Fiber-Filled PTFE Sheets
Glass Fiber-Filled PTFE Material Properties
Increases wear and creep resistance
Chemically Inert (Exceptions in HF and Strong Bases)
Performs well in oxidizing environments
Typical Applications for Glass Fiber-Filled PTFE
Cookware coatings and rotating platforms
Containers and pipelines for chemicals
Glass Fiber-Filled PTFE Requirements
PB10302 meets ASTM D4547 Type I Grade I requirements.
PB10305 meets ASTM D4745 Type I Grade 2 and AMS 3678/4 requirements.
Glass Fiber-Filled PTFE Material Data Sheet Downloads
PB10302 - Material Data Sheet
PB10305 - Material Data Sheet
Glass Fiber-Filled PTFE Spec. Compliance
- 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