PI

Plastic Engineering Solution supplies and machines Polyimide (PI) for critical applications where components must perform under extreme heat, friction, electrical stress, and demanding mechanical conditions. We provide PI rods, sheets, plates, and custom-machined PI components for industries that require long-term stability in severe operating environments.

Polyimide (PI) is an extreme engineering plastic known for its outstanding high-temperature resistance, excellent dimensional stability, low wear performance, electrical insulation, and mechanical strength under thermal stress. It is suitable for insulation parts, bearings, bushings, seals, aerospace components, electronics, semiconductor parts, and precision industrial components where reliability cannot be compromised.

Key Properties of PI

Outstanding high-temperature resistance
Excellent dimensional stability under thermal stress
Low wear and good friction performance
Strong electrical insulation properties
Good mechanical strength at elevated temperatures
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Low outgassing characteristics for sensitive applications
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Reliable performance in dry-running conditions
Suitable for extreme precision and insulation components

These properties make Polyimide (PI) suitable for applications where components must retain stability, insulation performance, wear resistance, and mechanical reliability under continuous heat and severe operating conditions.

Applications

PI Industrial Applications

Polyimide (PI) components are used in applications where heat, electrical insulation, friction control, and dimensional stability are critical to long-term performance.

High-temperature insulation components
Bearings, bushings, and wear rings
Seals and precision sliding parts
Aerospace and defense components
Semiconductor and electronics parts
Medical and analytical equipment components
Electrical insulation and connector parts
Dry-running mechanical components

Polyimide (PI) is suited for demanding applications where components must maintain thermal stability, insulation performance, low wear, and mechanical reliability in extreme operating environments.

PI PRODUCTS OFFERED

PI Stock Shapes

Plastic Engineering Solution supplies Polyimide (PI) in stock shapes and machined forms for applications where thermal stability, insulation performance, and dimensional reliability are essential.

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PI Rods

(10mm - 60mm diameter)

PI Plates

(9.53mm - 63.5mm thickness)

PI products are typically selected for high-temperature, low-wear, electrically insulating, and precision applications where long-term performance is required under severe operating conditions.

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Machining capability

PI Machining

Polyimide (PI) is used for precision components where heat resistance, insulation performance, and dimensional stability are critical. Machining PI requires careful control of cutting parameters to protect surface quality, maintain accuracy, and avoid stress on the material.

Our PI machining capability includes:

For PI components, machining is planned around the final operating environment — especially where heat, friction, insulation, and dimensional control influence long-term performance. This helps deliver clean finishes, accurate dimensions, and reliable performance in extreme industrial applications.

AVAILABLE GRADES

PI Grades Supported

We support a range of Polyimide (PI) material grades selected for high-temperature, insulation, and precision-performance applications.

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Natural PI
Black PI
Bearing-grade PI
Electrical-grade PI
High-temperature PI
Wear-resistant PI grades
Industrial-grade PI
Custom PI grades based on application requirements

Our team helps select the right PI grade based on heat exposure, electrical insulation needs, wear conditions, dimensional stability requirements, friction performance, and the expected operating environment.

Tolerance information

PI Machining Tolerances

Polyimide (PI) components are often used in precision applications where dimensional stability under heat, friction, and electrical stress is important.

PI machining tolerances depend on:

  • Component geometry
  • Wall thickness
  •  Part size and complexity
  • Insulation or sliding fit requirements
  •  Heat exposure conditions
  • Friction and wear environment
  • Application requirements

Because PI is commonly selected for high-temperature and electrical applications, tolerances are reviewed based on the part’s final function and operating conditions. Tight tolerances may be achievable for precision components, subject to design feasibility and engineering evaluation.

Detailed tolerance information can be provided during the RFQ stage.