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Packing 4220

Material: Packing 4220 is braided throughout of PTFE and graphite yarn intertwined with aramid yarn and impregnated with silicone oil.

Purpose: features low coefficient of friction and high mechanical strength.

Intended use: for sealing against mineral and synthetic oils, steam, weak acids, abrasive substances. Packing 4220 is recommended for sealing of equipment operating with mineral and synthetic oils, steam, weak acids, abrasive agents, at paper mills.

Maximum pressure:

  • centrifugal pump: 20 bar 
  • plunger pump: 150 bar
  • reinforcement: 200 bar

Min temperature: -100 °C

Max temperature: 280 °C

Speed: 

  • centrifugal pump: 20 m/s
  • plunger pump: -

pH: 3 - 12

Square section: 6 - 25 mm


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