Rulon® is a proprietary, homogeneous material made primarily of PTFE-based resins engineered and developed for specific applications. The Rulon® family of materials combines high compressive strength, a low coefficient of friction, and excellent abrasion and corrosion resistance running without lubrication. Rulon® products are used in bearing and seal applications at temperatures from -400° F to 500° F with and without supplemental lubricants. Rulon® products are unique in that they do not cause stick-slip, or erratic low-speed motion. They also withstand a variety of harsh environments such as extreme dryness, cryogenic temperatures, water, steam and hydrocarbon fuel. Rulon® products primarily are used for mechanical, electrical and chemical applications.
- No stick-slip
- High compressive strength
- Low coefficient of friction
- Excellent abrasion and corrosion resistance
- Withstands low and high temperature extremes
Standard Shapes and Forms
The range of sizes and shapes are grade specific, please contact us for more information.
Grades and Colors
Rulon® LR is marked by low deformation characteristics that increase the mechanical properties for slightly more load capacity with a corresponding decrease in flexibility. Rulon® LR is compatible with most hardened steal substrates. Mild steel is acceptable, though harder surfaces are better. It also has a virtually universal chemical inertness. Only molten sodium and fluorine at elevated temperatures and pressures show any signs of attack. This grade sometimes is used as a seal for piston rings but not in flexing lip-seal applications. Color is dark maroon.
Rulon® J is an all-plastic reinforced PTFE with lower friction and wear compared to other reinforced PTFE compounds. Rulon® J can be used against nonferrous and nonmetallic surfaces such as mild steel, 316 stainless steel, aluminum, brass and other plastics. It has superb tribological properties and is suitable for use in bearing, seal and wear-component applications. The mechanical strength of Rulon® J is slightly less than it is for other Rulon® grades. It is ideally suited for start/stop applications where stick-slip must be eliminated. Rulon® J should not be used in alkaline solutions, oxidizing acids or steam environments. Color is dull gold.
Rulon® W2 is a black PTFE-based material developed for use in fresh-water applications. It exhibits low friction and excellent wear characteristics (one of the lowest wear rates in fresh water) as well as good thermal dissipation, preventing shaft distress. Its properties are enhanced when wet. It is compatible with most metal substrates and soft mating surfaces. Rulon® W2 is a good alternative to Rulon® J when superior chemical resistance is needed. However, it should not be used on very soft mating surfaces or where electrical insulation is desired.
Rulon® 142 was developed specifically for use as linear guideways on machine tools. It has a slightly lower deformation underload than Rulon® LR and is more thermally and electrically conducive. Typical characteristics include low wear, high thermal dissipation and good dimensional stability. Rulon® 142 also is more abrasive and less chemically resistant than Rulon® LR; however, most other physical properties are similar. Strong acids and bases should be avoided, as they may attack the Rulon® 142 fillers. Color is bright turquoise.
Rulon® 123 is a glossy black non-abrasive compound for softer mating surfaces, such as stainless steel. This material has excellent chemical resistance and is FDA and USDA compliant. It is less expensive than Rulon® J but is slightly less flexible and higher in wear. It has a high resistance to deformation, low coefficient of friction and good thermal and electrostatic dissipation. This material has a maximum operating temperature of 550 °F (288 °C). Rulon® 123 releases black wear debris over time and should not be used in ultra-dry, vacuum applications or where insulation is desired.
For more information please view the Complete Rulon Materials Handbook.