Hengshui Minai Rubber & Plastic Technology Co., Ltd. is one of the leading manufacturers and suppliers of ptfe o ring seal in China. We are committed to providing high quality customized service and OEM/ODM service to global clients. Please feel free to wholesale bulk durable ptfe o ring seal made in China here from our factory. If you have any enquiry about pricelist, please feel free to email us.
Products Description
This series of PTFE O Ring Seal is made of brand-new high-purity PTFE raw materials without impurities or recycled fillers, finely processed through precision CNC turning, integral molding and mirror polishing. The products feature regular roundness, smooth pore-free, burr-free and scratch-free surfaces with high dimensional accuracy and precise fitting clearance. The extremely stable molecular structure of PTFE delivers universal corrosion resistance, hardly reacting with strong acids, strong alkalis, oxidants, organic solvents and oil media. It will not corrode, swell, soften or age after long-term immersion. With excellent temperature adaptability, it works stably from -200℃ ultra-low temperature to 260℃ high temperature without dimensional and performance fluctuation under alternating hot and cold environments, avoiding hardening, cracking and high-temperature relaxation leakage of rubber parts. Featuring inherent self-lubricating and non-stick properties with an ultra-low friction coefficient, it supports oil-free dry friction dynamic operation without shaft scratching, scaling or jamming during high-speed reciprocating and rotating movement. With multiple sealing functions of waterproof, dustproof, airtight and oil-proof, it has uniform appearance and stable performance, suitable for various static sealing and low-speed dynamic sealing scenarios, acting as a core accessory for high-end industrial equipment to replace traditional rubber seals.
Product Advantages
Ultimate Chemical Inertness & Universal Corrosion Resistance
PTFE ranks first in chemical stability among plastics, resisting most industrial corrosive media including strong acid, strong alkali, aqua regia, hydrofluoric acid, various organic solvents, corrosive oil and salt spray. It will not corrode, swell or degrade after long-term use, completely solving the problem of rubber seals being easily eroded and failed by chemical media, and adapting to high-corrosion harsh working conditions in chemical and pharmaceutical industries.
Ultra-wide Temperature Adaptability & Thermal Stability
It has an industry-leading temperature resistance range of -200℃~260℃ for long-term operation. It never cracks or shrinks at ultra-low temperatures, nor softens, deforms or ages at high temperatures. Resisting extreme temperature difference alternation and instantaneous temperature impact, it maintains constant sealing performance, suitable for extreme low and high temperature scenarios such as low-temperature cold chains, high-temperature steam and hot oil equipment.
Ultra-low Friction & Self-lubrication for Dry Operation
With non-stick surface and ultra-low friction coefficient, it has excellent solid self-lubricating performance and can operate stably under dry friction without lubricant assistance. It ensures smooth dynamic movement without jamming, shaft damage or powder wear, effectively reducing equipment operating resistance and loss, and adapting to high-end oil-free clean working conditions prohibiting oil pollution.
Anti-aging & Mildew Resistance with Ultra-long Service Life
The material resists UV rays, humidity, oxidation and mildew erosion without fatigue and aging problems of rubber materials. It will not harden, relax or produce permanent deformation during long-term operation. With far better weather resistance and fatigue resistance than ordinary rubber and plastic seals, it is almost maintenance-free, greatly reducing equipment replacement and operation costs.
Food-grade Safety & Wide Application
High-purity PTFE material is non-toxic, odorless and free of harmful precipitation, complying with food and medical safety standards. It can be in direct contact with food, drinking water and liquid medicine, resistant to high-temperature disinfection and repeated sterilization, suitable for high-cleanliness scenarios such as food processing, medical devices and water purification equipment.
Product Parameters
|
Parameter |
Specification |
|
Material |
High-purity PTFE (Teflon) |
|
Hardness Range |
60D–65D Shore D |
|
Working Temperature |
-200℃ ~ 260℃ (Long-term stable operation) |
|
Working Pressure |
0–8MPa Medium & high pressure sealing |
|
Friction Coefficient |
≤0.04 (Ultra-low self-lubrication) |
|
Core Features |
Strong acid & alkali resistance, solvent resistance, high & low temperature resistance, self-lubrication, anti-aging, food-grade safety |
|
Applicable Medium |
Acid & alkali solution, organic solvent, high-temperature steam, oil & water, liquid medicine, dry gas, salt spray environment |
|
Processing Technology |
Precision CNC turning, mirror polishing, integral molding, burr-free precision processing |
|
Applicable Conditions |
High corrosion, ultra-wide temperature range, oil-free dry friction, high-cleanliness static/low-speed dynamic sealing |
Product Q&A
Q: What is the difference between PTFE O Ring Seal and rubber O-rings?
A: The core difference lies in material characteristics and applicable working conditions. PTFE is rigid inert engineering plastic featuring corrosion resistance, ultra temperature resistance, anti-aging and dry friction adaptability with permanent stable dimensions and no elastic fatigue, suitable for extreme conditions of corrosion, high & low temperature and oil-free cleanliness. Rubber O-rings are soft elastomers relying on resilience for sealing, only applicable to normal temperature, low pressure, clean water and oil medium scenarios. They cannot resist strong corrosion, are prone to aging and deformation at high temperatures, and cannot work under dry friction. PTFE O Ring Seal can completely replace rubber rings under extreme conditions with far higher stability and longer service life.
Q: Do PTFE O Ring Seal need lubrication?
A: No. PTFE has excellent inherent solid self-lubricating performance with an ultra-low friction coefficient, being one of the few sealing materials supporting oil-free dry friction operation. It runs smoothly without shaft scratch or wear scaling during dynamic reciprocating and rotating movement without lubrication, especially suitable for high-end oil-free scenarios such as food medical, precision instruments and clean workshops.
Q: Are PTFE O Ring Seal prone to aging and failure?
A: They are hardly aged or failed. The extremely stable molecular structure of PTFE is not affected by UV rays, oxygen, humidity and temperature changes, without elastic fatigue, hardening embrittlement, relaxation deformation and other aging problems of rubber materials. It maintains stable performance for a long time under normal and harsh working conditions with almost lifelong anti-aging performance. Its service life is dozens of times that of ordinary rubber seals, greatly reducing equipment maintenance and replacement frequency.
