Rulon® J
Rulon® J, is a member of the filled PTFE (polytetrafluoroethylene) family. This unique family of polymers has the ability to withstand nearly all chemicals, has low friction and is resistant to heat. Rulon® J is an all-polymeric reinforced, dull gold colored PTFE compound that operates very well against soft mating surfaces such as 316 stainless steel, aluminum, mild steel, brass and plastics. The uniquie “shaft friendly” material is also low in friction and wear and is self lubricating.
Rulon® J has one of the lowest coefficients of friction of most reinforced PTFE materials. This makes it ideally suited for start/stop applications where stick-slip must be eliminated. The tribological (wear) properties of this material also make it suitable for both bearing and wear component applications where lubrication is not desirable or impossible.
| Specification | Test | Value | Units |
| Specific Gravity, 73°F | D792 | 2.65 | – |
| Tensile Strength @ Yield, 73°F | D638 | 2,000 | psi |
| Tensile Modulus of Elasticity, 73°F | D638 | psi | |
| Tensile Elongation (at break), 73°F | D638 | 180 | % |
| Flexural Strength, 73°F | D790 | psi | |
| Flexural Modulus of Elasticity | D790 | psi | |
| Shear Strength, 73°F | D732 | psi | |
| Compressive Strength – Ultimate | 750 | psi | |
| Compressive Strength at 2% Deformation | D695 | 750 | psi |
| Compressive Strength at 10% Deformation | D695 | psi | |
| Deformation Under Load | % | ||
| Compressive Modulus of Elasticity, 73°F | D695 | ||
| Compressive Strength ⊥ to Laminate (Modulus) | psi | ||
| Compressive Strength ⊥ to Laminate (Yield) | psi | ||
| Compressive Strength ⊥ to Laminate (Ultimate) | psi | ||
| Hardness, Durometer (Shore “D” scale) | D2240 | 60 | |
| Hardness, Rockwell (Scale as noted) | D785 | Rockwell M | |
| Izod Impact, Notched @ 73°F | D256 Type A | – | ft.lbs/in. of notch |
| Coefficient of Friction (Dry vs Steel) Static | PTM55007 | 2.0 | |
| Coefficient of Friction (Dry vs Steel) Dynamic | PTM55007 | 1.2 | |
| Maximum Static Bearing Load (P) | PTM55007 | 750 | psi |
| Maximum Unlubricated No Load Bearing Velocity (V) | PTM55007 | 400 | ft/minute |
| Maximum Limiting PV (Unlubricated) | PTM55007 | 10,000 | psi x ft/min. |
| Wear Factor “K” x 10-10 | PTM55010 | Cubic in.-min/ft.lbs.hr | |
| Sand Wheel Wear/Abrasion Test | UHMW=100 | ||
| Minimum Mating Surface Hardness | RB25 | Rockwell (Brinnell) | |
| Coefficient of Linear Thermal Expansion | E-831(TMA) | in/in/°F x 10-5 | |
| Coefficient of Thermal Expansion (Bearing Diameter) | E-831(TMA) | 4.90 | in/in/°F x 10-5 |
| Coefficient of Thermal Expansion (Bearing Length) | E-831(TMA) | 6.50 | in/in/°F x 10-5 |
| Softening Point | °F | ||
| Heat Deflection Temperature 264 psi | D648 | °F | |
| Embrittlement Temperature | -400 | °F Min. | |
| Continuous Service Temperature in Air | 550 | °F Max. | |
| Short Term Service Temperature | 550 | °F Max. | |
| Tg-Glass Transition (Amorphous) | D3418 | °F | |
| Melting Point (Crystalline) Peak | D3418 | °F | |
| Thermal Conductivity | F433 | 2.0 | BTU-in/(hr/ft2°F) |
| Dielectric Strength Short Term | D149 | Volts/mil | |
| Volume Resistivity | D257 | 8×1018 | ohm/cm |
| Surface Resistivity | D257 | 6×1018 | ohm/cm |
| Dielectric Constant, 106 Hz | D150 | 2.4 | |
| Dissipation Factor, 106 Hz | D150 | 0.001 | |
| Flammability @ 3.1mm(1/8 in.) UL94 | UL94 | V-0 | |
| Arc Resistance | seconds | ||
| Water Absorption, Immersion 24 Hours | D570 (2) | Nil | % |
| Water Absorption, Immersion Saturation | D570 (2) | Nil | % |
| Machinability Rating | 3 | 1=easy, 10=difficult | |
| Rod Diameter Availability (Off the Shelf) | .250-2.50 | inches | |
| Sheet Thickness Availability (Off the Shelf) | .125-1.00 | inches |
| Characteristics / Attributes | Low friction/ Excellent Chemical Resistance/ operates well against soft mating surfaces |
