VESPEL® SP-22

Vespel® SP-22 is a polyimide grade offering exceptional thermal and chemical resistance. This material is ideal for applications requiring resistance to aggressive chemicals and long-term thermal stability. Same friction properties as SP21, but with a lower coefficient of thermal expansion. Maximum creep resistance. Used in aerospace, automotive, chemical processing and other industries where low thermal expansion is more important than mechanical strength. For example: bushings, thrust washers.

• 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