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
Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.
Water Absorption. 24 hrs
Tensile Strength @yield
Tensile Elongation @Break
Hardness. Rockwell R
IZOD Impact Strength Notched
Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
Max Continuous Operating Temperature
Heat Deflection Temp at 264 psi
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.
Other wear surfaces
Low wear at high bearing PVs
Low coefficient of friction
Long-term thermal stability
Good impact resistance
Minimal thermal expansion
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