RULON® LR (FILLED PTFE) – MAROON
Material Information
Rulon® is the brand name for Saint Gobain’s reinforced PTFE. Filled PTFE offers a combination of high compressive strength, a low coefficient of friction, chemical resistance, electrical insulation, and excellent abrasion and corrosion resistance without the need for lubrication. These materials can run from -400º F to 500º F with or without lubrication, which makes them ideal for use in bearings or seals. Rulon® material specifically is known to have the unique property of no “slip stick”, which means it has no erratic motion at low speeds. Rulon® LR is the most widely used grade of Rulon®. It offers high wear resistance, low friction, good electrical properties, and chemical inertness. It can be bonded to nearly any surface to provide wear resistance and reduce friction. This makes Rulon® LR a great material for sleeves and flange or thrust bearings. It is available in a maroon color in the forms of strip, rod, and tube.Application
- Flange or thrust bearings
- Sleeves
- Washers
- Seals
- Piston cups
Properties
- Chemical inertness
- Compatible with most hardened steel substrates
- Good load carrying properties
- High wear resistance
- Low friction
- Good electrical insulator
- No slip-stick
Specifications
| Physical | Astm Test Method | Rulon® AR | Rulon® LR | Rulon® J |
|---|---|---|---|---|
| Density (lb/in^3) | D792 | 0.081 | 0.082 | 0.07 |
| Specific Gravity | D792 | 2.24 | 2.27 | 1.95 |
| Water Absorption @ 24 hours (%) | D570 | 0 | 0 | 0 |
| Hardness, Shore D | D2240 | 60-75 | 60-75 | 60 |
| Mechanical | ||||
| Tensile Strength (PSI) | D1457 | 2,000 | 1,500 | 2,000 |
| Tensile Elongation at Yield (%) | D1457 | 175 | 150 | 180 |
| Izod Impact (Notched), ft-lb/in | D256 | 6 | 6 | – |
| Thermal | ||||
| Coefficient of Thermal Expansion, 10^-5/°F | D696 | Varies with temp | Varies with temp | Varies with temp |
| Continous Service Temp (Operating), °F | – | 500 | 500 | 500 |
| Flammability Rating | UL94 | None | None | None |
| Electrical | ||||
| Dielectric Strength, Short Term, (Volts/Mil) @ .125″ Thick | D149 | 400-500 | 400-500 | 200 |
| Volume Resistivity (ohm-cm) @ 50% RH | D257 | 1.0 x 10^15 | 1.0 x 10^15 | 8.0 x 10^18 |
| Dielectric Constant at 1 MHz | D150 | 2.5 | 2.5 | 2.4 |
| Dissipation Factor at 1 kHz | D150 | 0.003 | 0.003 | 0.001 |
Disclosure: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.