Natural Polyimide (PI) | Vespel® SP-1 Equivalent | Sheets, Rods & Parts
We provide premium PI in Sheets, Rods, Tubes, Granules, and Powder. From high-performance raw materials to precision CNC-finished components, we offer a one-stop shop for your most demanding projects.
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Performance: 300°C+ thermal stability, ultra-low outgassing, and superior wear resistance.
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Customization: Tailored grades and dimensions to meet specific industrial specs.
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Trust: Professional technical consulting and Non-Disclosure Agreements (NDA) supported to protect your IP.
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Any inquiries? Contact us now for a technical review.
Product information
Published information supports preliminary product selection. Confirm the exact grade, dimensions, tolerances, documentation and application suitability with the quotation for your order.
Description
Extreme Service: -269°C to +300°C.
We offer a full-spectrum supply of Polyimide, including Rods, Sheets, Tubes, Powder, and Pellets. Whether you need high-purity raw materials or precision CNC-machined components, we provide technical consulting and NDA protection for your proprietary designs.
Technical Performance
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Thermal Stability: Continuous service up to 300°C (572°F); short-term peaks to 480°C.
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Vacuum & Plasma: Ultra-low outgassing (TML <1.0%); ideal for UHV and semiconductor plasma chambers.
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Tribological Excellence: Graphite-filled black grades for high-load, dry-lubricated wear resistance.
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Mechanical Integrity: Superior creep resistance and dimensional stability under extreme mechanical stress.
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Chemical Purity: Low ionic contamination (<10ppm), suitable for sensitive electronic environments.
II. Material Forms & Availability
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Stock Shapes: Sheets (5mm-100mm) and Rods (Ø6mm-Ø100mm).
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Specialty Forms: Thin-walled Tubes and Custom Profiles to reduce material waste.
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Raw Materials: PI Powder (for compression molding) and PI Granules/Pellets (for injection & extrusion).
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Color/Grade: Standard Black (Graphite-filled) or custom-filled specialty grades.
III. Manufacturing & Trust Services
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Custom Machining: In-house CNC center for finished components based on your 2D/3D drawings (Vespel® equivalent quality).
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Technical Consulting: Our engineers assist in grade selection based on your temperature, load, and chemical requirements.
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NDA (Non-Disclosure Agreement): We respect and protect your intellectual property; confidential manufacturing is our standard protocol.
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Documentation: Full batch traceability, TDS, COA, and RoHS/REACH compliance provided.
Material overview
Understanding PI (Polyimide)
Why engineers use it
- Strong thermal stability for electrical and mechanical applications.
- Excellent insulation potential in films and precision parts.
- Low wear and low outgassing options in selected grades.
- Good dimensional control in carefully processed components.
- Available in forms suited to insulation, machining or formulation work.
Limits to consider
- “PI” is a family name, not a single universal grade.
- Moisture, processing route and fillers affect dimensions and performance.
- Some forms cannot be melt processed like ordinary thermoplastics.
- High cost requires a clearly defined performance need.
- Acceptance values must be tied to the exact product and test method.
Grades and product forms
Film grades target flexible insulation; powder and resin support formulation or molding routes; stock shapes serve machined components; graphite, PTFE or other fillers may tune wear and friction. Product form and grade must be identified explicitly in the RFQ.
Performance points to review
| Evaluation area | Why it matters | Information to provide |
|---|---|---|
| Temperature behavior | Useful performance under elevated or changing temperature | Continuous and peak temperature, cycle length and time at load |
| Mechanical response | Strength and stiffness must match the real part geometry | Load direction, stress level, impact and fatigue expectations |
| Environmental resistance | Fluids, cleaning agents and atmosphere can change service life | Chemical name, concentration, temperature and exposure time |
| Dimensional control | Tight-tolerance parts depend on both material and processing | Finished dimensions, tolerances and assembly conditions |
| Electrical or insulation needs | Electrical requirements may influence grade and thickness | Voltage, dielectric, conductivity or insulation target |
These are engineering discussion points, not guaranteed property values. Final acceptance criteria should be agreed for the selected grade, process and order.
Typical application directions
These examples show where the material may be evaluated. They do not replace a suitability review for the finished component.
Fabrication and processing preparation
Share the finished part drawing as well as the requested rod diameter and length. This makes it possible to discuss machining allowance, tolerance, cut length, quantity and whether a closer starting size could reduce waste.
Where the application is critical, define what a successful trial looks like before material is ordered: dimensions after processing, visual condition, mechanical response, assembly fit or another measurable result.
When another material may be better
PBI and PAI can address different extremes of heat, strength and wear, while PEEK may offer easier processing for some applications. PI is selected when its thermal, electrical or tribological balance solves the specific design problem.
We recommend sharing the current material and the reason it is being reconsidered. Cost, processability, supply form and inspection burden belong in the decision alongside technical performance.
Information needed for an accurate quotation
A useful RFQ reduces follow-up questions and helps us distinguish between a material request and a finished-part requirement.
| Product form | Raw material, stock shape, semi-finished blank or completed part |
|---|---|
| Dimensions | Nominal size, finished size and tolerances |
| Quantity | Trial quantity, first order and estimated annual demand |
| Application | Part function and current material, if any |
| Operating temperature | Continuous range, peak temperature and cycle duration |
| Environment | Chemicals, gases, moisture, pressure, vacuum or outdoor exposure |
| Mechanical duty | Load, speed, impact, wear and mating components |
| Documentation | Drawing revision, inspection, traceability or compliance needs |
Frequently asked questions
Can I request a sample or trial quantity?
Trial quantities can be discussed according to product form and availability. Tell us what you need to prove during the trial, the intended process and the expected production quantity if the test succeeds.
Do you provide a data sheet or material documentation?
Available documentation depends on the selected material and supply route. List the documents required by engineering, purchasing or quality when you inquire so they can be checked before quotation.
Can the grade be selected from a product name alone?
No. Similar product names can cover different grades, colors, fillers and processes. Selection should be based on the finished application, environment and required property balance.
Can you supply custom dimensions or finished parts?
Custom sizes, blanks or finished parts can be reviewed where appropriate. A drawing with tolerances, quantity and material requirement is the best basis for quotation.
How should we evaluate an alternative to our current material?
Share the current grade, the part’s service conditions and the reason for changing it. A useful comparison looks at failure mode, processing, life, inspection and total project cost—not only a single property value.
What determines lead time?
Lead time depends on product form, grade, size, quantity, documentation, machining and current availability. Confirm the required delivery date and destination with the RFQ rather than assuming a standard schedule.
Send the drawing, application and quantity. We will use the project details to prepare a practical material and supply discussion.
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