Vespel® SP-21

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About Vespel® SP-21

DuPont™ Vespel® SP-21 is a graphite-enhanced Polyimide with low-friction properties for use with or without lubrication in various applications. Vespel® SP-21 has maximum physical strength, elongation, and toughness.

  • Balanced electrical properties
  • Dimensional Stability
  • Excellent Wear resistance
  • Good Abrasion Resistance
  • High Compressive Strength
  • Low Coefficient of Friction
  • Low outgassing
  • Bearings
  • Bushings
  • Connectors
  • Locators
  • Pump wear rings
  • Retainers
  • Rollers
  • Seals
  • Valve caps
  • Valve Seats
  • Wand tips
  • Washers
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