Back to Rulon®
Rulon® 641 is manufactured from FDAcompliantmaterials which possess excellent load and wear characteristics. It offers excellent, continuous non-lubricated service up to 10,000PV – higher for intermittent service. While the load capacity of Rulon 641is generally limited to 1,000psiatroom temperature, deformation is a function of wall thickness, temperature, and load. Its compatibility with a wide array of mating surfaces, including mild steel,303and 316stainless steel, as well as harder materials, make it a good choice for most food and pharmaceutical bearing applications.
Notable Material Features
- High compression strength
- Low coefficient of friction
- Excellent abrasion and corrosion resistance while running without lubrication

Grades of Rulon®
| Rulon LR Properties | |
|---|---|
| Temperature – Typical Range ˚F (˚C ) | -400/+550 (-240/288)* |
| Maximum PV (continuous)(MPa+m/s) | 10,000 (0.35)* |
| Maximum P – psi (static)(MPa) | 1,000 (6.9)* |
| Maximum V -SFM (no load)(m/s) | 400 (2)* |
| ShaftHardness – Minimum | Rb25 |
| Shaftfinish recommended Ra (min/um) | 8 – 16 (0.2-0.4)* |
| ShaftMaterial | Mild, 303 |
| ShaftMaterial | 316Stainless Steel |
| Products | Applications |
|---|---|
| Automatically molded bearings & components | Printers |
| Sleeve,flanged and thrustbearings | Mixers |
| Piston Rings | Compressors |
| Stamped and formed seals | Appliances |
| Extruded shapes | Chute Liners |
| Machined parts | Insulators |
| Molded shapes | Linear slides |
| Shaft Bearings |
| Engineering | |
|---|---|
| Friction – static & dynamic | .10 – .30 |
| Water Absorption ASTM D570 | 0% |
| Flammability ASTM D635 | Non-Flammable |
| Chemical Resistance | Inert |
| Thermal Conductivity | 2.6 |
| BTU/hr/sq.ft./˚F/in. | 2.0 |
| Linear Coefficientof (78˚-200˚F) | Diameter 3.9×10-5 (7.0)* |
| Thermal Expansion (26˚ -93˚C) | Length 4.9×10-5(8.8)* |
| (78˚-300˚F) | Diameter 4.2×10-5(7.6)* |
| (26˚-149˚C) | Length 5.7×10-5 (10.3)* |
| Physical Data | |
|---|---|
| Elongation ASTM D638 | 175% |
| Tensile Strength ASTm D638 (MPa) | 2000 PSI (19.8) |
| Deformation (1500 psi – 24 hr. RT) | 4% |
| Specific Gravity | 2.25 |
Rulon® is a registered trademark of Saint-Gobain Performance Plastics Corporation.