Back to Rulon®
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 freshwater), as well as good thermal dissipation, preventing shaft distress.  Its properties are enhanced when wet.  Rulon® W2 is compatible with most metal substrates and soft mating surfaces is DWGV (European) certified for applications in contact with drinking water and is a good alternative to Rulon® J when superior chemical resistance is needed. Rulon® W2 should NOT be used on very soft mating surfaces or where electrical insulation is necessary.  Color: black.
Notable Material Features
- High compression strength
- Low coefficient of friction
- Excellent abrasion and corrosion resistance while running without lubrication
| Rulon LR Properties | |
|---|---|
| Temperature – Typical Range ËšF (ËšC ) | -400/+550 |
| 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 | Hard, Mild, and Stainles Steel |
| Products | Applications |
|---|---|
| Automatically molded bearings & components | Pumps |
| Sleeve,flanged and thrust bearings | Mixers |
| Piston Rings | Compressors |
| Stamped and formed seals | Appliances |
| Extruded shapes | Automotive |
| Machined parts | Fresh Water Submerged |
| Molded shapes | Thrust Bearings |
| Wear Bands | |
| Thrust Bearings | |
| Ovens |
| Engineering | |
|---|---|
| Friction – static & dynamic | .15 – .30 |
| Water Absorption ASTM D570 | 0% |
| Flammability ASTM D635 | Non-Flammable |
| Chemical Resistance | Inert |
| Thermal Conductivity | 4.5 |
| BTU/hr/sq.ft./ËšF/in. | 4.5 |
| Linear Coefficient of (78Ëš- 200ËšF) | Diameter 4.7×10-5 (8.5)* |
| Thermal Expansion (26Ëš – 93ËšC) | Length 6.0×10-5(10.8)* |
| (78Ëš- 300ËšF) | Diameter 4.9×10-5(8.8)* |
| (26Ëš – 149ËšC) | Length 6.3×10-5 (11.3)* |
| Physical Data | |
|---|---|
| Elongation ASTM D638 | 70% |
| Tensile Strength ASTm D638 (MPa) | 1800 PSI (12.4)* |
| Deformation (1500 psi – 24 hr. RT) | 3% |
| Specific Gravity | 2.10 |
Rulon® is a registered trademark of Saint-Gobain Performance Plastics Corporation.