VESPEL® SP-1

VESPEL® SP‑1: the reference polyimide for extreme temperatures

An unfilled polyimide for high‑temperature stability

VESPEL® SP‑1 is a high‑performance DuPont™ polyimide with no fillers or additives. This allows the material to maintain its properties over an exceptionally wide temperature range, from cryogenic conditions to high continuous service temperatures.

Mechanical performance and durability

The material combines high strength, elongation and toughness, making it resistant to thermal shock and mechanical stress. With no measurable glass transition temperature, SP‑1 retains stable performance until its upper thermal limits.

Thermal, electrical insulation and cleanliness

VESPEL® SP‑1 features low thermal conductivity, excellent electrical insulation and very low outgassing, making it suitable for clean and sensitive environments.

Typical applications

• thermal and electrical insulators
• valve seats, seals and gaskets
• components for cryogenic and high‑temperature systems
• aerospace, space and semiconductor equipment

• 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) : 86.2
• Mechanical resistance compression module (in MPa) : 2413
• Pressure-velocity limit (PV) : Low
• Low friction and wear coefficient : Medium
• Wear resistance : Poor
• Electrical conductivity : Insulative
• Chemical resistance : Medium
• Polymer name : Polyimide
• Polymer abbreviation : PI
• Mechanical resistance (in MPa) : Medium
• Continuous thermal resistance (in °C) : 290
• Mechanical resistance constraint compression (in MPa) : 133