ptfe sealing ring

Name ptfe sealing ring
Material Polytetrafluoroethylene (PTFE)
Specification 1.67*1.88in
Application Used for sealing mechanical equipment

The PTFE sealing ring, also known as the tetrafluoroethylene sealing ring or Teflon sealing ring, PTFE or F4 for short, is a polymer of tetrafluoroethylene. It has a range of unique characteristics that make it ideal for sealing applications. Here are some of the main features of PTFE seals:

High chemical stability:

PTFE sealing ring has excellent chemical inertia, and is almost non-reactive to strong acids, strong bases, strong oxidants and a variety of organic solvents. This chemical stability guarantees its long-term reliability in a variety of chemical environments.

Good thermal stability:

PTFE sealing ring has excellent thermal stability, its cracking temperature is above 400 ° C, and can work normally in a wide temperature range of -200 ° C to 300 ° C. This wide temperature operating range allows PTFE seals to maintain good sealing performance even in extreme temperature environments.

Low coefficient of friction:

PTFE sealing ring has a low coefficient of friction, whether it is between metal or other materials, it shows good anti-friction. In addition, its surface is self-lubricating and not easy to adhere to viscous substances, thus ensuring a long-term sealing effect.

Excellent wear resistance:

PTFE seals have excellent wear resistance and maintain stable sealing performance even in high-speed and high-pressure working environments.


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Unable to find ptfe products that meet your needs, please let us know, we support processing customization

Frequently Asked Questions

Of course, we can customize pfe products to your satisfaction according to your material, size and process

The maximum size of ptfe molded plate can reach 2000mm long * 2000mm wide * 390mm thick,
ptfe rods have a maximum length of 4000mm and a diameter of 500mm

PTFE is essentially chemically inert and is highly resistant to chemical attack up to its 500º F. maximum continuous operating temperature. As indicated in the referenced PTFE Handbook above, there are a few exceptions including molten alkali metals, turbulent liquid, or gaseous fluorine; and a few fluorochemicals, such as chlorine trifluoride, ClF3, or oxygen difluoride, OF2, which readily liberate free fluorine at elevated temperatures.  Several tables are available on the web supporting appropriate usage of PTFE with chemicals and various concentrations and temperatures. 

We have a set of strict quality testing system, never expected finished products, will be tested and registered, traceable

The general production cycle of ptfe products is about 15 days, and the delivery date can be agreed on for customized products

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