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Packing 4220

Material: PTFE fibre and graphites + aramid fibre 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.

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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