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