Poly-Texx® PVX

Poly-Texx® PVX is an ultra high-performance engineering thermoplastic material. This semi-crystalline bearing grade PEEK (Polyetheretherketone) is enhanced with carbon fiber, graphite and PTFE. It boasts a balance of high temperature, outstanding mechanical properties, chemical and steam resistance. The combination of superior tribological (wear) properties and low friction, makes it one of the most capable bearing materials available. It can handle hostile outdoor environments, UV exposure, wet and continuous steam sterilizations. It is capable of environments where thermal cycling, high temperature water or steam where most polymer systems degrade.

Poly-Texx® PVX is a self-lubricating bearing material whose key characteristics are high compressive strength, low friction, low coefficient of thermal expansion, superior bearing and wear properties, with superior resistance to steam and water.

Specification Test Value Units
Specific Gravity, 73°F D792 1.48
Tensile Strength @ Yield, 73°F D638 18,800 psi
Tensile Modulus of Elasticity, 73°F D638 psi
Tensile Elongation (at break), 73°F D638 1.5 %
Flexural Strength, 73°F D790 30,000 psi
Flexural Modulus of Elasticity D790 1,400,000 psi
Shear Strength, 73°F D732 psi
Compressive Strength – Ultimate 16,000 psi
Compressive Strength at 2% Deformation D695 16,500 psi
Compressive Strength at 10% Deformation D695 psi
Deformation Under Load %
Compressive Modulus of Elasticity, 73°F D695
Compressive Strength ⊥ to Laminate (Modulus) 16,000 psi
Compressive Strength ⊥ to Laminate (Yield) 16,000 psi
Compressive Strength ⊥ to Laminate (Ultimate) 16,000 psi
Hardness, Durometer (Shore “D” scale) D7901 M99  Rockwell M
Hardness, Rockwell (Scale as noted) D7901  R126 Rockwell R
Izod Impact, Notched @ 73°F D256 “A” 1.0 ft.lbs/in. of notch
Coefficient of Friction (Dry vs Steel) Static PTM 55007 0.2
Coefficient of Friction (Dry vs Steel) Dynamic PTM 55007 0.1-0.15
Maximum Static Bearing Load (P) PTM 55007 16,000 psi
Maximum Unlubricated No Load Bearing Velocity (V) PTM 55007 600 ft/minute
Maximum Limiting PV (Unlubricated) PTM 55007 100,000 psi x ft/min.
Wear Factor “K” x 10-10 D 37 o2  .20 Cubic V
Sand Wheel Wear/Abrasion Test 50 UHMW=100
Minimum Mating Surface Hardness 25 Rockwell (Brinnell)
Coefficient of Linear Thermal Expansion D696 1.2 in/in/°F x 10-5
Coefficient of Thermal Expansion // to Laminates D696 1.2 in/in/°F x 10-5
Coefficient of Thermal Expansion I to Laminates D696 1.2 in/in/°F x 10-5
Softening Point 530 °F
Heat Deflection Temperature 264 psi D648 530 °F
Embrittlement Temperature Cryogenic °F Min.
Continuous Service Temperature in Air 500 °F Max.
Short Term Service Temperature 570 °F Max.
Tg-Glass Transition (Amorphous) D3418  289 °F
Melting Point (Crystalline) Peak D3418 649 °F
Thermal Conductivity C 177 1.66 BTU-in/(hr/ft2°F)
Dielectric Strength Short Term D149 Volts/mil
Specific Volume Resistance D257 3 x 105 ohm/cm
Surface Resistance D257  5 x 106 ohm/sq
Dielectric Constant, 106 Hz D150
Dissipation Factor, 106 Hz D150
Flammability @ 3.1mm(1/8 in.) UL94 UL94  V0
Arc Resistance seconds
Water Absorption, Immersion 24 Hours D570 (2) 0.1 %
Water Absorption, Immersion Saturation D570 (2) 0.1 %
Machinability Rating 3 1=easy, 10=difficult
Tubing Diameter Availability (Off the Shelf) .50 6.0 inches
Sheet Thickness Availability (Off the Shelf) .250 3.0 inches
Characteristics / Attributes Very High Load / Self Lubricating / Highest PV Rating