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Vespel® SP-22 has 40% graphite by weight for enhanced wear resistance, lower friction, improved dimensional stability (low coefficient of thermal expansion), and stability against oxidation. Typical uses are bearings, thrust washers, bushings, seal rings, slide blocks, and other wear applications. Vespel® SP-22 is great for projects with tight tolerances.

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At a Glance

Available In
Sheet, Rod

Certifications
GE A50 TF146 Class C, ASTM-D 6456-99 Ty 2, Class 1, AMS 3644 Class 3, Mil-R-46198 Type 2, Class 2

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Technical Information

Stock Products Properties Applications Advantages Grades

Stock Products

TypeSizeLengthColor
Sheet 0.062″ – 2.0″ 10″ x 10″ Black
Rod 1/4″ – 6″ DIA CTS Black

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.

Properties

Physical PropertiesUnitsASTMResults
Density lb/in3 D792 0.060
Water Absorption. 24 hrs % D570 .14
Mechanical PropertiesUnitsASTMResults
Tensile Strength @yield psi D638 7500
Tensile Modulus psi D638
Tensile Elongation @Break % D638 3.0
Flexural Strength psi D790 13,000
Flexural Modulus psi D790 700,000
Hardness. Rockwell R D785 E5-25
IZOD Impact Strength Notched ft-lb/in D256
Thermal PropertiesUnitsASTMResults
Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) D256 2.1
Max Continuous Operating Temperature °F 500
Heat Deflection Temp at 264 psi °F
NOTE: The property values presented above are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers’ complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.

Applications

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

Advantages

  • Low wear at high bearing PVs
  • Low coefficient of friction
  • Long-term thermal stability
  • High stiffness
  • Low elongation
  • Outstanding performance
  • Good strength
  • Good impact resistance
  • Minimal thermal expansion

Grades

  • Vespel® SP-1
  • Vespel® SP-21
  • Vespel® SP-211
  • Vespel® SP-3
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