Vespel® SP-21

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Overview
 Performance Characteristics
 Typical Applications
 Typical Properties
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DuPont™ Vespel® SP-21 BRAND
DuPont™ Vespel®
Polyimide Shapes

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Also, visit our technical resources section 		Overview 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...
AUTHENTIC DUPONT™ VESPEL® POLYIMIDE SHAPES
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.
Click to view
DuPont™ Vespel® SP-21 BRAND
DuPont™ Vespel®
Polyimide Shapes

DOWNLOAD

Also, visit our technical resources section 		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
Click to view
DuPont™ Vespel® SP-21 BRAND
DuPont™ Vespel®
Polyimide Shapes

DOWNLOAD

Also, visit our technical resources section 		Typical Applications Superior wear and low-friction properties for:

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

Vespel® SP-21 Typical Isostatic Shapes Properties
Vespel sp-21
UNITS ASTM TEST VESPEL®
SP-1		 VESPEL®
SCP-5000		 VESPEL®
SP-21		 VESPEL®
SP-22		 VESPEL®
SP-211		 VESPEL®
SP-3
Tensile strength  
(73°F)		 psi D-1708/
D-638		 12,500 23,400 9,500 7,500 6,500 8,200
Flexural modulus
(73°F)		 psi D-790 450,000 836,000 550,000 700,000 450,000 475,000
Izod impact (notched,
73°F)		 ft-lbs/in
of notch		 D-256 0.8 - 0.8 - - 0.4
Heat deflection temperature @ 264 psi °F D-648 ~680 - ~680 - - -
Thermal Endurance(50% TS retention) in air for 3000hr °F 500 662 540 ~540 - -
Water absorption (immersion
24 hours,
73°F)		 % D-570 0.24 0.08 0.19 0.14 0.21 0.23
Coefficient of linear thermal expansion(73°-572°F) in/in/°Fx10-5 D-696 3.0 2.4 2.7 2.1 3.0 2.9
Values may vary according to brand name. Please ask your Curbell Plastics representative for more specific information about an individual brand.

The DuPont Oval Logo, DuPont®, The miracles of science™, and Vespel® are registered trademarks or trademarks of E. I. du Pont de Nemours and Company or its affiliates.

Caution: Do not use this product in medical applications involving permanent implantation in the human body. For more information, visit: "DuPont Medical Caution Statement."

DuPont™ Vespel® information contained on this page is courtesy of Vespel.com and is property of DuPont™.
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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.