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