Vespel® rod is a high-performance material. It has high strength but very little resistance to acids, alkalis, and steam. It has excellent wear, impact, and creep resistance.
| Vespel® Grade | Application | Composition |
| SP-1 | Mechanical and electrical components at high temperatures Seals, valve seats, and insulators | Unfilled. It has the highest strength and elongation, the lowest modulus and thermal conductivity, and the best electrical properties. |
| SP-21 | Applications with low friction and wear, whether lubricated or unlubricated. Seals, valve seats, bearings, washers, and seal rings | 15% of the space is filled with graphite. Improves long-term thermal stability and provides increased inherent wear resistance. |
| SP-211 | Applications with low friction and wear in moderate temperature and PV environments. Ball Bearings (bushings and washers). | 10% PTFE, 15% graphite. Provides the least amount of static friction. |
| SP-3 | Applications for friction and wear in vacuum or inert gases. Bearings, piston rings, and seals are all examples of mechanical components. | MoS2 is 15 percent filled. In dry environments, it has the best wear performance. |
Temperature: continuous up to +288°C (+482°C short term).
Outstanding strength and impact resistance.
Also available: Vespel® Sheet and Vespel® Tube.
| Vespel® Grade | Rod Length (mm) |
Rod Diameter (mm) |
| – | – | 3.1 6.3 9.5 11.1 12.7 15.8 19.0 25.4 31.7 38.1 50.8 63.5 82.5 |
| SP-1 | 965 | * * * * * * * * * * * * * |
| SP-21 | 965 | * * * * * * * * * * * * * |
| SP-211 | 965 | – * * * * * * * * * * * * |
| SP-3 | 965 | – * * * * * * * * * * * * |
*Denotes standard rod availability.
Please note: 82.5Ø options are available in 241mm and 685mm long only.
Vespel® is a registered trademark of DuPont™
