Vespel® SP-21

ISO 9001:2008 Certified

Material Description

Vespel® is a high performance polyimide material which is formed from resin manufactured only by DuPont.  Polyimide materials are characterized by a ring-shaped molecular structure containing nitrogen and because of it’s high-performance polyimide offers a broad combination of temperature resistance, chemical resistance, mechanical toughness, natural lubricity, wear-resistance & insulation properties.  Vespel® is one of the highest performing engineering plastics currently available.  Vespel® will not melt and can operate continuously from cryogenic temperatures to 550°F (288°C), with excursions to 900°F (482°C).  Vespel® parts consistently exhibit superior performance in a variety of applications requiring low wear and long life in hostile environments.

Vespel® SP-21 has 15% graphite by weight added for increased wear resistance and reduced friction in applications such as bearings, thrust washers, bushings, seal rings, slide blocks and other wear applications. Vespel SP-21 has the highest mechanical properties of the graphite filled grades. If insulation is less important than low-friction properties, then you’re looking for graphite-enhanced SP-21. Vespel product listing does not imply any formal relationship between Professional Plastics and DuPont. DuPont certifications are non-transferable therefore material is provided with Professional Plastics certifications.