Vespel® SP-21

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Performance Characteristics
Typical Applications
Typical Properties
Use DuPont™ Vespel® SP-21 for low wear and friction in applications such as:

  • Bearings
  • Thrust washers
  • Bushings
  • Seal rings
  • Slide blocks
  • Other wear surfaces

Vespel® SP-21 has outstanding physical strength, elongation, and toughness.

Vespel® SP-21 Standard Sizes

SHEET 10"x10" (0.062"-2.0" thick)
ROD diameter 0.25"-6.0"

  • Length, width, thickness, and diameter tolerances vary by size
  • Custom sizes available upon request
  • Vespel® is not available as a film

Vespel® SP Grades

Bearing grades
Authentic DuPont Vespel Polyimide Shapes - Learn why the success of your application depends on it Demand...
Learn why the success of your application depends on it

Curbell Plastics, Inc. is the Western US Region Authorized Supplier
of Authentic DuPont™ Vespel® Polyimide Shapes

NOTE: Several grades of DuPont™ Vespel® are available. For additional information on Vespel® SP-21 polyimide shapes, contact your local Curbell Plastics representative or call Curbell at 1-888-287-2355.
Performance Characteristics
  • Low wear at high bearing PVs
  • Low coefficient of friction
  • Long-term thermal stability
  • High stiffness
  • Low elongation
  • Outstanding performance with or without lubrication
  • Good strength and impact resistance
Typical Applications
Superior wear and low-friction properties for:

  • Thrust washers
  • Seal rings
  • Valve seats
  • Bearings
  • Seals
Typical Properties

Vespel® SP-21 Isostatic Shapes Properties

Vespel® SP-21
Data Sheet
The DuPont Oval Logo, DuPont™, The miracles of science and Vespel®, Teflon®, and Delrin® are registered trademarks or trademarks of E.I. du Pont de Nemours and Company or its affiliates.

CAUTION: Vespel® is not permitted for use in medical applications involving any implantation in the human body or where contact with internal body fluid or tissues will equal or exceed 24 hours. For more information, visit: DuPont CAUTION Regarding Medical Applications of DuPont Materials

DuPont™ Vespel® information contained on this page is courtesy of and is property of DuPont.
Contact Curbell Plastics at 1-888-287-2355 for more specific information about DuPont™ Vespel® SP-21 or complete our request for quote online form.