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
Increases wear and creep resistance
Chemically Inert (Exceptions in HF and Strong Bases)
Performs well in oxidizing environments
PB10302G meets ASTM D4547 Type I Grade I requirements.
PB10305T meets ASTM D4745 Type I Grade 2 and AMS 3678/4 requirements
Property | Test Method | Units | 15 Glass Fiber | 25 Glass Fiber |
---|---|---|---|---|
Color | - | - | White | White |
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 [327] | 621 [327] |
Glass Transition Temp. | ASTM D3418 | °F [°C] | -143 [-97]; 246 [119] | -143 [-97]; 246 [119] |
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