VESPEL SP [polyimide]

Vespel SP are made from DuPont SP-Polyimide offer a combination of properties that allows them to excel in applications requiring low wear and long life in severe environments.

Main Characteristics:

  • Allowable service temperature from 255°C up to 480°C for short periods.

VESPEL SP-1 natural (chestnut)
This is the unfilled base resin that provides maximum physical properties and the best electrical and thermal insulation. It is frequently used as valve seats, seals, and insulators working at elevated temperatures.

VESPEL SP-21 grey-black
This grade contains 15% graphite, added to provide long wear and low friction. These features make VESPEL SP-21 ideal for bearings, thrust washers and dynamic seals.