Poly-Texx P40 is a highly filled Glass Filled PTFE composite bearing material. It is self-lubricating and has very low friction. Typical applications include wheels, rotary thrust washers, bearings and slide plates on industrial machinery and conveying systems. Compatible for use against steel with hardness exceeding 35 Rockwell C or harder. Its main attributes are low friction, and 1,500 psi compressive load capacity. It has a total PV rating of 10,000, with a low-load velocity (V) of over 400 sfm. The combination of excellent bearing properties, self-lubrication and compression strength makes Poly-Texx P40 a great choice for many demanding bearing and wear applications. P40 is gray / dark gray in color and is available in sheet, rod and tubing. Care should be taken during manufacturing to account for the abrasive nature of the material caused by the high concentration of glass.
| Specification | Test | Value | Units |
| Specific Gravity, 73°F | D792 | 2.27 | – |
| Tensile Strength @ Yield, 73°F | D638 | 2100 | psi |
| Tensile Modulus of Elasticity, 73°F | D638 | 190000 | psi |
| Tensile Elongation (at break), 73°F | D638 | 150-200 | % |
| Flexural Strength, 73°F | D790 | 1950 | psi |
| Flexural Modulus of Elasticity | D790 | psi | |
| Shear Strength, 73°F | D732 | – | psi |
| Compressive Strength – Ultimate | (Bonded) | 5000 | psi |
| Compressive Strength at 2% Deformation | D695 | 1500 | psi |
| Compressive Strength at 10% Deformation | D695 | psi | |
| Deformation Under Load | 9.5 | % | |
| Compressive Modulus of Elasticity, 73°F | D695 | 110000 | psi |
| Compressive Strength ⊥ to Laminate (Modulus) | 1000 | psi | |
| Compressive Strength ⊥ to Laminate (Yield) | 1000 | psi | |
| Compressive Strength ⊥ to Laminate (Ultimate) | 1000 | psi | |
| Hardness, Durometer (Shore “D” scale) | D2240 | 57-60 | |
| Hardness, Rockwell (Scale as noted) | D785 | 63-65 | Rockwell D |
| Izod Impact, Notched @ 73°F | D256 Type A | ft.lbs/in. of notch | |
| Coefficient of Friction (Dry vs Steel) Static | PTM55007 | 0.2 | |
| Coefficient of Friction (Dry vs Steel) Dynamic | PTM55007 | 0.12 | |
| Maximum Static Bearing Load (P) | PTM55007 | 1500 | psi |
| Maximum Unlubricated No Load Bearing Velocity (V) | PTM55007 | 400 | ft/minute |
| Maximum Limiting PV (Unlubricated) | PTM55007 | 10000 | psi x ft/min. |
| Wear Factor “K” x 10-10 | PTM55010 | 6 | Cubic in.-min/ft.lbs.hr |
| Sand Wheel Wear/Abrasion Test | 60 | UHMW=100 | |
| Minimum Mating Surface Hardness | Rockwell (Brinnell) | ||
| Coefficient of Linear Thermal Expansion | E-831(TMA) | 5.5 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion (Bearing Diameter) | E-831(TMA) | 5.5 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion (Bearing Length | E-831(TMA) | 6.2 | in/in/°F x 10-5 |
| Softening Point | °F | ||
| Heat Deflection Temperature 264 psi | D648 | 150 | °F |
| Embrittlement Temperature | cryogenic | °F Min. | |
| Continuous Service Temperature in Air | 550 | °F Max. | |
| Short Term Service Temperature | 550 | °F Max. | |
| Tg-Glass Transition (Amorphous) | D3418 | 636 | °F |
| Melting Point (Crystalline) Peak | D3418 | N/A | °F |
| Thermal Conductivity | F433 | 3.1 | BTU-in/(hr/ft2°F) |
| Dielectric Strength Short Term | D149 | – | Volts/mil |
| Volume Resistivity | D257 | ohm/cm | |
| Surface Resistivity | D257 | ohm/cm | |
| Dielectric Constant, 106 Hz | D150 | 2.4 | |
| Dissipation Factor, 106 Hz | D150 | 1.5 | |
| Flammability @ 3.1mm(1/8 in.) UL94 | UL94 | V-0 | |
| Arc Resistance | D257 | >1015 | ohm/square |
| Water Absorption, Immersion 24 Hours | D570 (2) | 0.02 | % |
| Water Absorption, Immersion Saturation | D570 (2) | 0.02 | % |
| Machinability Rating | 2 | 1=easy, 10=difficult | |
| Rod Diameter Availability (Off the Shelf) | .50-3.0 | inches | |
| Sheet Thickness Availability (Off the Shelf) | .020-6.0 | inches | |