Polytetrafluoroethylene (PTFE) packing is a high-performance sealing material made of pure PTFE or PTFE composited with other 

materials. It has excellent chemical stability, temperature resistance and low friction coefficient. Due to its excellent performance 

characteristics, PTFE packing has become an indispensable key material in the field of industrial sealing and is widely used in dynamic 

and static sealing occasions under various harsh working conditions.

Main Types Of PTFE Packing

1. Pure PTFE packing

It is braided from 100% polytetrafluoroethylene fiber, with the best chemical inertness and purity, suitable for ultra-high purity media 

and highly corrosive environments

2. Lubricant-containing PTFE packing

Lubricants such as graphite and molybdenum disulfide are added to PTFE fibers to further reduce the friction coefficient and improve 

wear resistance

3. PTFE composite packing

PTFE/aramid composite packing: Combining the chemical stability of PTFE and the high strength of aramid

PTFE/carbon fiber composite packing: Enhanced thermal conductivity and mechanical strength

PTFE/glass fiber composite packing: Improved temperature resistance and dimensional stability

4. Expanded PTFE packing

Expanded PTFE material treated with special process has better flexibility and sealing performance

Performance Characteristics Of PTFE Packing

1. Excellent chemical stability: Can resist corrosion from almost all strong acids, strong alkalis and organic solvents

2. Wide temperature range: -200°C to +260°C for long-term use, up to 300°C for short time

3. Extremely low friction coefficient: dynamic friction coefficient is only 0.05-0.1, reducing shaft wear

4. Excellent weather resistance: not affected by ultraviolet rays and ozone, good anti-aging performance

5. Non-stickiness: extremely low surface energy, not easy to be adhered by the medium

6. Electrical insulation: high volume resistivity, suitable for electrical equipment sealing

7. Pollution-free: meets FDA standards and can be used in food and pharmaceutical industries

Main Application Areas Of PTFE Packing

1. Chemical industry: reactor stirring shaft seal, centrifugal pump mechanical seal auxiliary, valve stem seal, pipeline flange seal

2. Oil and gas: oil production equipment seal, refinery pump valve seal, LNG cryogenic equipment seal

3. Pharmaceutical and food processing: sterile equipment seal, filling equipment seal, pharmaceutical reactor seal

4. Power industry: power plant chemical dosing system, nuclear power plant auxiliary equipment seal, transformer seal

5. Other industrial fields: paper mill bleaching section, electroplating equipment, semiconductor manufacturing equipment

SEONTEC supplies various types of PTFE packing, support size customization, welcome to inquire! seontec.com