Dharti Polymers is a trusted PI Rod and Sheet Manufacturer and Supplier in Ahmedabad, Gujarat, India, offering high-performance Polyimide engineering plastic materials for demanding industrial applications.
PI, also known as Polyimide, is an advanced engineering plastic known for its exceptional high-temperature resistance, low-temperature performance, high mechanical strength, excellent electrical insulation, dimensional stability, wear resistance and low thermal expansion.
PI Rods and Sheets are suitable for applications where ordinary engineering plastics may not perform reliably because of extreme temperatures, friction, mechanical stress, radiation or demanding operating environments.
The combination of thermal, mechanical and electrical properties makes Polyimide suitable for precision components used in aerospace, automotive, electrical, electronics, semiconductor, machinery and other advanced industries.

PHYSICAL FEATURES of PI Rod and Sheet
- Excellent high-temperature resistance
- Excellent low-temperature performance
- High mechanical strength
- Excellent dimensional stability
- Low coefficient of thermal expansion
- Excellent electrical insulation
- High friction and wear resistance
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One of the major advantages of Polyimide PI Rod and Sheet is its ability to maintain useful properties across a very wide temperature range.
According to the technical reference provided for this material, certain specialised PI grades can perform at temperatures as low as approximately -240°C and may tolerate temperatures approaching 400°C, while some grades can withstand short-term exposure approaching 450°C.
These values are highly dependent on the specific Polyimide grade, formulation, load, operating environment and duration of exposure. Therefore, the exact continuous and short-term operating temperature should always be confirmed from the technical datasheet of the selected grade.
Some PI grades are designed for continuous use above 250°C, which makes Polyimide one of the most capable engineering plastics for high-temperature applications.
CHARACTERISTICS OF PI ROD AND SHEET
APPLICATIONS OF PI ROD AND SHEET
After years of development, Polyimide has become an important material for demanding industrial and high-technology applications.
PI Rods and Sheets can be used for:
- High-temperature bearings
- Bushes
- Wear rings
- Thrust washers
- Guides
- Rollers
- Sealing components
- Electrical insulators
- Spacers
- Gaskets
- Valve components
- Pump components
INDUSTRIES USING PI ROD AND SHEET
Polyimide materials are used across industries where temperature resistance, electrical insulation, wear resistance and dimensional stability are critical.
Typical industries include:
- Aerospace Industry
- Aviation Industry
- Defence Industry
- Automotive Industry
- Electrical Industry
- Electronics Industry
- Semiconductor Industry
- Atomic Energy Applications
- Precision Engineering
- Textile Machinery
- Pump Industry
- Compressor Industry
- Large Motor Manufacturing
- Construction Machinery
- Mould Industry
- Industrial Machinery
- Automation Equipment
- Scientific Equipment
PI FOR HIGH TEMPERATURE BEARINGS AND BUSHES
PI engineering plastic is particularly useful for manufacturing high-temperature bearings, bushes, wear rings and sliding components.
Its combination of dimensional stability, mechanical strength, friction resistance and temperature performance allows selected PI grades to perform under conditions where conventional plastics may experience excessive wear or deformation.
Modified Polyimide grades can also be formulated to improve:
- Lubricity
- Wear performance
- Mechanical strength
- Electrical properties
- Dimensional stability
This allows PI components to be selected according to specific machinery and operating requirements.
PI FOR ELECTRICAL AND ELECTRONIC APPLICATIONS
Polyimide provides excellent electrical insulation along with high-temperature stability.
It can therefore be considered for:
- Electrical insulation components
- High-temperature spacers
- Electronic equipment parts
- Semiconductor machinery
- Insulating bushes
- Connector components
- Electrical fixtures
- High-temperature electrical supports
The combination of electrical insulation and dimensional stability is especially valuable in equipment exposed to elevated temperatures.
TECHNICAL DATA:
| Property | PI Rod and Sheet Performance |
|---|---|
| Material | Polyimide PI |
| Product Form | Rod and Sheet |
| Temperature Resistance | Excellent |
| Low Temperature Performance | Excellent |
| Mechanical Strength | High |
| Dimensional Stability | Excellent |
| Thermal Expansion | Low |
| Electrical Insulation | Excellent |
| Wear Resistance | Excellent |
| Friction Resistance | Very Good |
| Self-Lubrication | Available in Selected Grades |
| Radiation Resistance | Excellent |
| Creep Resistance | Very Good |
| Chemical Resistance | Grade Dependent |
| Organic Solvent Resistance | Good for Suitable Grades |
| Machinability | Suitable for Precision Machining |
MACHINED COMPONENTS FROM PI ROD AND SHEET
- PI Wear Pads
- PI Rollers
- PI Sealing Rings
- PI Valve Components
- PI Pump Components
- Custom Polyimide Components
- PI Wear Pads
- PI Rollers
- PI Sealing Rings
- PI Valve Components
- PI Pump Components
- Custom Polyimide Components
WHY CHOOSE DHARTI POLYMERS?
Dharti Polymers, based in Ahmedabad, Gujarat, supplies engineering plastic rods, sheets and industrial components for different machinery and manufacturing requirements.
Our engineering plastic range includes Nylon, Cast Nylon, UHMWPE, PP, PTFE, PU, POM Delrin, HDPE, PEEK, PVC, Polycarbonate, Hylam, PET and other specialised engineering materials.
Customers choose Dharti Polymers for:
- Wide range of engineering plastics
- Standard and customised sizes
- Rod and sheet supply
- Cut-to-size requirements
- Custom machined components
- Industrial quantity supply
- Material selection assistance
- Ahmedabad-based support
- Supply across Gujarat and India
FAQs – PI Rod and Sheet
Dharti Polymers supplies PI Rods and Sheets in Ahmedabad, Gujarat for high-temperature, electrical, wear-resistant and precision engineering applications.
PI stands for Polyimide, a high-performance engineering plastic known for excellent temperature resistance, dimensional stability, mechanical strength, electrical insulation and wear resistance.
The usable temperature depends strongly on the specific Polyimide grade. The supplied technical reference indicates that specialised grades can work across extremely broad temperature ranges, with some capable of continuous service above 250°C and short-term exposure to higher temperatures. The selected grade’s datasheet should always be checked before final use.
PI Rods are commonly machined into bearings, bushes, rings, spacers, rollers, seals, electrical insulators and other precision industrial components.
PI Sheets are suitable for high-temperature insulation, precision machine components, wear plates, electrical parts, semiconductor equipment and specialised industrial applications.
Yes. Polyimide offers excellent electrical insulation properties and is widely considered for electrical and electronic applications that also require high-temperature stability.





















