These imported polyimide (PI) sheets and rods are manufactured using DuPont™ Vespel® SP-1 grade raw material and are available in brown and black. Known as the "king of engineering plastics," polyimide offers exceptional high-temperature resistance (with continuous service temperatures exceeding 300°C and short-term capability up to 400°C), superior mechanical strength, outstanding wear resistance and self-lubricating properties, and an extremely low coefficient of linear expansion. Suitable for high-end sectors such as aerospace, semiconductors, precision machinery, and electronics, it is an ideal material for replacing metal to solve challenges involving high temperatures, wear, and insulation requirements. Product Specifications

Material: Polyimide (PI), DuPont Vespel SP-1 grade

Color: Brownish-tan / Black (optional)

Diameter Range: 1mm to 100mm (Full range: 1–60mm in 1mm increments; also includes 65, 70, 75, 80, 85, 90, 95, 100mm)

Length: 305mm / 307mm / 310mm

Measurement Standard: Metric

Temperature Range: Long-term -269°C to +300°C; short-term up to +400°C

Packaging: 1 piece/pack

Product Features

✅ Exceptional High-Temperature Resistance: Long-term operating temperature of 300°C, short-term up to 400°C; maintains excellent mechanical properties at high temperatures

✅ Superior Mechanical Strength: High strength and rigidity; excellent creep and fatigue resistance; wear-resistant and self-lubricating

✅ Extremely Low Thermal Expansion: Low coefficient of linear expansion and excellent dimensional stability; ideal for precision components

✅ Excellent Electrical Insulation: High dielectric strength and low dielectric loss; suitable for high-frequency, high-temperature electrical applications

✅ Radiation and Chemical Resistance: Excellent radiation resistance; resistant to most organic solvents and weak acids

✅ Excellent Machinability: Can be turned, milled, drilled, and ground; allows for custom precision parts

✅ Comprehensive Specifications: Diameters 1–100mm, lengths 305–310mm; covers a wide range of needs

Applications

✈️ Aerospace: Engine components, thermal insulation gaskets, seals, bearing cages

🔬 Semiconductor Equipment: High-temperature fixtures, insulating parts, wafer carriers

⚙️ Precision Machinery: High-temperature bearings, bushings, wear-resistant sleeves, seal rings

🔌 Electronics & Electrical: High-temperature insulating parts, connectors, coil bobbins

🏭 Industrial Equipment: Compressor valve plates, thrust washers, wear-resistant slide plates

🚗 Automotive Industry: Turbocharger components, high-temperature seals

🛠️ Scientific Research Applications: High-temperature experimental fixtures, insulating supports

Installation and Machining Instructions

PI material is suitable for machining processes such as turning, milling, and drilling.

Carbide tools are recommended; high-speed steel tools tend to wear out quickly.

Ensure adequate heat dissipation during machining to prevent material degradation caused by localized overheating.

Avoid forceful impact during installation, as PI material has limited toughness.

When used as a wear-resistant component, proper lubrication is recommended.

Precautions

⚠️ PI material may undergo thermal decomposition at high temperatures (>400°C), releasing trace amounts of gas; ensure proper ventilation.

⚠️ Avoid contact with strong alkalis and concentrated acids, as these may compromise material performance.

⚠️ Wear protective equipment during machining to avoid inhaling dust.

⚠️ Different colors (brown/black) may indicate different grades or filler materials; please verify your requirements before purchasing.

⚠️ Please make precise selections for diameter and length from the drop-down menu.