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PTFE gland packing, also known as Teflon gland packing, is a flexible, square braid of polytetrafluoroethylene (PTFE) filaments or exfoliated graphite acrylic fiber that is used to seal pumps and valves. It is commonly used in a variety of industries, including chemical, pharmaceutical, petroleum refining, and food processing. 

Here are some of the benefits of PTFE gland packing: 

  • Chemical resistance: PTFE gland packing can withstand almost any chemical substance. 
  • Temperature resistance: PTFE gland packing can withstand temperatures up to +260°C. 
  • Low friction: PTFE gland packing has a low coefficient of friction, which helps prevent leakage. 
  • FDA approved: PTFE gland packing is approved for use in the food processing industry. 

PTFE gland packing is used in a variety of applications, including: 

  • Sealing pumps and valves

    PTFE gland packing is commonly used to seal pumps and valves. 

  • Sealing hostile chemical systems

    PTFE gland packing is used to seal systems that contain aggressive chemicals. 

  • Sealing tubes in high-motion pumps

    PTFE gland packing with graphite can be used to seal tubes in high-motion pumps. 

  • Wire insulation

    PTFE gland packing can be used for insulation in miniature cable applications and internal wiring-soldering applications. 

The longevity of PTFE gland packing depends on the media and application. For example, a gland seal on a valve stuffing box will last longer than a seal on a rotary pump.