VESPEL® SP-22

VESPEL® SP‑22: dimensional stability for precision applications

VESPEL® SP‑22 is a high‑performance DuPont™ polyimide filled with graphite, specifically developed to minimize thermal expansion and maintain dimensional accuracy under temperature variations.

Key properties

• very low coefficient of thermal expansion
• excellent creep resistance
• reliable wear and friction behavior in air or lubricated systems
• high thermal stability

Typical applications

• precision bushings and bearings
• thrust washers
• seal rings and dynamic components
• aerospace and high‑temperature industrial systems

• Semi-finished product manufacturer : Dupont
• Raw material supplier : Dupont
• Minimum thermal resistance (in °C) : -273
• Maximum thermal resistance (in °C) : 550
• Mechanical resistance traction module (in MPa) : 51.7
• Mechanical resistance compression module (in MPa) : 3275
• Pressure-velocity limit (PV) : High
• Low friction and wear coefficient : Low
• Wear resistance : Good
• Electrical conductivity : Insulative
• Chemical resistance : Medium
• Polymer name : Polyimide
• Polymer abbreviation : PI
• Charge / Reinforcement : 40 % graphite
• Mechanical resistance (in MPa) : Medium
• Continuous thermal resistance (in °C) : 290
• Mechanical resistance constraint compression (in MPa) : 112