Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
PTFE+20% PI Composite Seal Rod Stock EM:ROD-0*40*100mm
High Rigid Anti-Creep PTFE+PI Filled Sealing Bar Solution
This PTFE+20% PI filled rod stock is specially developed for high-demand sealing applications requiring both chemical resistance and mechanical strength. The PI filler effectively improves the compression and wear resistance of pure PTFE, solving the problems of easy deformation and creep under load. With standard size ROD-040100mm, it is a versatile base material for turning various custom spring energized seals, piston rings and precision dynamic sealing components in harsh environments.
5.0
design customization
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Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
1.Product Advantages
20% PI reinforcement significantly boosts rigidity and anti-creep performance, resisting permanent deformation under continuous high pressure. Low friction coefficient ensures smooth operation without stick-slip effect, ideal for reciprocating and rotary motion parts. Maintains excellent chemical resistance to acids, alkalis, oils and most organic solvents, suitable for corrosive media. Superior high-temperature stability keeps consistent mechanical properties even under long-term thermal exposure. The composite material has balanced toughness and hardness, reducing wear and extending service life of finished seals.
2.Working Principle
The PTFE matrix provides inherent self-lubrication and chemical isolation, while the uniformly dispersed PI particles act as reinforcing points to improve structural rigidity. Under pressure and temperature, the PI network restricts molecular chain movement, effectively preventing compression creep and cold flow. This combination allows the material to maintain stable dimensions and sealing performance even when subjected to long-term cyclic load and temperature fluctuation.
3.Product Details
This rod stock is made of PTFE filled with 20% polyimide powder, processed by high-pressure molding, sintering and precision turning. Standard specification EM:ROD-040100mm, each piece undergoes visual inspection, dimensional tolerance check and surface quality test. The material is uniform in color and texture, free of cracks, bubbles or impurities. Packaged individually with anti-scratch protection and outer carton for safe storage and transportation.
4.Application Range
Suited for processing custom spring energized seals, piston rings, valve stem seals and dynamic sealing components. Also used for manufacturing high-temperature and chemical-resistant parts in fluid equipment, pumps, compressors and precision industrial machinery.
5.FAQ
Q1: What is the main benefit of adding 20% PI to PTFE?
A1: The PI filler greatly improves the material’s rigidity, anti-creep and compression resistance, solving the easy deformation problem of pure PTFE under long-term pressure. Q2: How does it perform under high temperature and corrosive media?
A2: It retains PTFE’s excellent chemical inertness while gaining PI’s high-temperature stability, suitable for most acid, alkali, oil and organic solvent environments. Q3: Is it suitable for custom machining into special-shaped seals?
A3: Yes, the uniform material composition ensures consistent performance, and the standard rod size can be easily turned into various non-standard seal profiles. Q4: Can it be used for high-speed reciprocating or rotary motion parts?
A4: Its low friction coefficient and balanced hardness ensure smooth, stable operation without stick-slip effect, ideal for dynamic sealing scenarios. Q5: How does the composite material extend seal service life?
A5: The PI reinforcement enhances wear resistance and reduces permanent deformation, maintaining consistent sealing performance even under long-term cyclic load.
A1: The PI filler greatly improves the material’s rigidity, anti-creep and compression resistance, solving the easy deformation problem of pure PTFE under long-term pressure. Q2: How does it perform under high temperature and corrosive media?
A2: It retains PTFE’s excellent chemical inertness while gaining PI’s high-temperature stability, suitable for most acid, alkali, oil and organic solvent environments. Q3: Is it suitable for custom machining into special-shaped seals?
A3: Yes, the uniform material composition ensures consistent performance, and the standard rod size can be easily turned into various non-standard seal profiles. Q4: Can it be used for high-speed reciprocating or rotary motion parts?
A4: Its low friction coefficient and balanced hardness ensure smooth, stable operation without stick-slip effect, ideal for dynamic sealing scenarios. Q5: How does the composite material extend seal service life?
A5: The PI reinforcement enhances wear resistance and reduces permanent deformation, maintaining consistent sealing performance even under long-term cyclic load.
6.Forever Seals’ Selling Points
With years of experience in filled PTFE composite material development, Forever Seals masters the formulation and processing technology of PTFE+PI blends. We use high-quality raw materials and strictly controlled sintering processes to ensure uniform dispersion of PI filler and consistent batch performance. Standard rod stock sizes are kept in stock for fast delivery, and custom formulations or sizes can be produced on request. Our technical team provides material selection guidance and processing recommendations to help customers achieve optimal sealing performance in their applications.
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