GENERAL DESCRIPTION
Rulon ® is the Saint Gobain Performance Plastics tradename for a family of reinforced proprietary PTFE compounds. This unique family of materials offers the combination of high compressive strengths, low coefficient of friction, and excellent abrasion and corrosion resistance while running without lubrication. These materials are used in bearing and seal applications at temperature extremes from -400°F to +500°F (-240°C to +260°C) with or without additional lubricants. Rulon ® materials also have the unique property of no "slip stick" --- no erratic motion at low speeds.
RULON ® GRADES Rulon ® LR
The best known, most widely used Rulon formulation. Rulon ® LR has a long reputation for high wear resistance, low friction, good electrical properties and chemical inertness. Not only does it make a great sleeve, flange or thrust bearing, it can also be bonded to nearly any surface to provide wear resistance and reduce friction. MAROON in color.
Rulon ® J
This is the best Rulon grade for aluminum and soft mating surfaces. Rulon ® J provides the lowest coefficient of friction of all Rulons, and provides good wear and abrasion resistance. Because this grade is "all plastic", it can be run on non-ferrous and non-metallic mating surfaces such as 316 Stainless, brass, and other plastics. It is used in both bearing and seal applications, but is generally not suitable for use in alkaline or oxidizing acid solutions. DULL GOLD in color.
Rulon ® 641
This FDA compliant material was specifically developed for food and drug applications. Rulon ® 641 is designed to run dry without any moisture or lubrication. WHITE in color.
Rulon ® AR
This was the first commercially available reinforced PTFE and is still quite popular. Rulon ® AR offers the best combination of flexibility and load-carrying properties. It has high wear resistance, low friction, and good electrically insulative and chemical properties. Since, its fillers are ceramic in nature, mating surfaces should be RC35 or harder. It is and used in seals, piston cups, and some bearings. MAROON in color.
Rulon ® 142
A material for extremely heavy loads. Rulon ® 142 is ideal for linear bearing applications such as slideways in machine tools and heavy equipment, and may also be used in expansion joints and bridge pads. This material provides low friction, excellent unlubricated wear properties and good heat dissipation and is etched one side for adhesive bonding to the steel substrate. Rulon ® 142 competes with Busak+Shamban's Turcite ® B Slydway ® product. TURQUOISE in color with a bronze tint.
Rulon ® 123
This FDA compliant material is excellent for wet or submerged applications. Rulon ® 123 provides excellent service against soft and non-ferrous mating surfaces. BLACK in color.
NOTE: Other specialized Rulon ® grades are also available for chemical environments, higher loads, severe wear, or custom applications. Contact us for more information!
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TYPICAL PROPERTIES of RULON® filled PTFE | |||||||
| ASTM or UL test | Property | Rulon® LR (maroon) |
Rulon® J (gold) |
Rulon® 641 (white) |
Rulon® AR (maroon) |
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| PHYSICAL | |||||||
| D792 | Density (lb/in³) (g/cm³) |
0.082 2.27 |
0.070 1.95 |
0.081 2.25 |
0.081 2.24 |
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| D2240 | Hardness, Shore D | 60-75 | 60 | 60 | 60-75 | ||
| D570 | Water Absorption, 24 hrs (%) | 0 | 0 | 0 | 0 | ||
| MECHANICAL | |||||||
| D1457 | Tensile Strength (psi) | 1,500 | 2,000 | 2,000 | 2,000 | ||
| D1457 | Tensile Elongation at Yield (%) | 150 | 180 | 175 | 175 | ||
| D256 | IZOD Notched Impact (ft-lb/in) | 6.0 | - | - | 6.0 | ||
| THERMAL | |||||||
| D696 | Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) |
varies widely with temperature |
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| Cenco-Fitch | Thermal Conductivity (BTU-in/ft²-hr-°F) (x 10-4 cal/cm-sec-°C) |
2.30 7.92 |
1.70 5.86 |
2.60 8.96 |
2.30 7.92 |
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| D635 | Flammability (in/min) | None | None | None | None | ||
| ELECTRICAL | |||||||
| D149 | Dielectric Strength (V/mil) short time, .08" thick | 400-500 | 200 | - | 400-500 | ||
| D150 | Dielectric Constant at 1 MHz | 2.5 | 2.4 | - | 2.5 | ||
| D150 | Dissipation Factor at 1 MHz | 0.003 | 0.001 | - | 0.003 | ||
| D257 | Surface Resistivity (ohm-cm) at 50% RH | 2 x 1013 | 6 x 1018 | - | 2 x 1013 | ||
| D257 | Volume Resistivity (ohm-cm) at 50% RH | 1 x 1015 | 8 x 1018 | - | 1 x 1015 | ||
| RECOMMENDED OPERATING LIMITS | |||||||
| Maximum Load (psi) | 1,000 | 1,000 | 1,000 | 1,000 | |||
| Maximum Velocity with No Pressure (ft/min) | 400 | 400 | 400 | 400 | |||
| Maximum PV Rating (psi x ft/min) | 10,000 | 10,000 | 10,000 | 10,000 | |||
| Maximum Operating Temp (°F / °C) | 500 / 260 | 500 / 260 | 500 / 260 | 500 / 260 | |||
| Minimum Operating Temp (°F / °C) | -450 / -240 | -450 / -240 | -450 / -240 | -450 / -240 | |||
| Minimum Mating Surface Hardness (Rockwell) | C35 | B25 | B25 | C35 | |||
NOTE: 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.RULON is a registered trademark of Saint-Gobain Performance Plastics Corporation.
All values at 73°F (23°C) unless otherwise noted.
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Copyright Boedeker Plastics, Inc.