Glass Fiber/Moly-Filled PTFE
Moly increases the surface hardness of PTFE while decreasing friction. It is commonly added in small amounts and combined with other fillers such as glass.
Glass fiber/Moly filled PTFE materials are used in seal components when resistance to high pressure and temperature is required along with very good wear resistance.
Glass fiber/Moly-filled PTFE materials prefer a lubricated environment and are used to seal against steel, stainless steel, and chromium-plated surfaces.
PBY Material Codes:
PB10300T - 5% Glass Fiber 5% Moly Grade 4
PB10303G - 15% Glass Fiber 5% Moly Grade 5
PB10304T - 23% Glass Fiber 2% Moly
|Property||Test Method||Units||5 Glass 5 Moly||15 Glass 5 Moly||23 Glass 2 Moly|
|Color||-||-||Grey||Light Grey||Light Grey|
|Specific Gravity||ASTM D792||-||2.150 - 2.300||2.150 - 2.300||2.180 - 2.280|
|Hardness Shore D||ASTM D2240||-||57 - 67||60 - 70||64 - 74|
|Tensile Strength, min.||ASTM D4745||PSI [MPa]||2,000 [13.8]||2,000 [13.8]||1,900 |
|Elongation at Break, min.||ASTM D4745||%||200||150||120|
|Second Melt Peak Temp.||ASTM D3418||°F [°C]||621 ||621 ||621 |
|Glass Transition Temp.||ASTM D3418||°F [°C]||-143 [-97]; 246 ||-143 [-97]; 246 ||-143 [-97]; 246 |
Glass Fiber Moly Filled PTFE Properties
Reduced starting friction coefficient and steady-state wear
Negligible electrical properties effects
High-temperature applications such as aircraft engines
Valve Seats, Seals and HPLC Applications
PB10300T meets ASTM D4745 Type I Grade 4 requirements.
PB10303G meets ASTM D4745 Type I Grade 5 requirements and AMS3678/3 requirements.
PB10300T - Material Data Sheet
PB10303G - Material Data Sheet
PB10304T - 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