Mechanical seal in black liquor media

For the reliable sealing of black liquor, L9UC type mechanical seals are used at Nagayo Paper in Japan.

Operating conditions: p = 3 bar (44 PSI), t = 85 °C (185 °F), n = 1,750 min^-1.

Mechanical seal in a sorter

A Pulpex-S/135-00 is installed in a sorter at the Sappi paper mill in Lanaken/Belgium. The mechanical seal runs in a continuous process in pulp preparation.

Operating conditions: p = 3.5 bar (51 PSI), t = 80 °C (176 °F), n = 800 min^-1. Medium: pulp.

Successful seal type installed in pulp and chemical pumps

A successful seal type for the entire plant: Over 250 standardized EagleBurgmann Cartex cartridge seals are installed in pulp pumps and in the pumps of the chemical sector at the Swedish Iggesund Holmen paper and pulp mill.

Operating conditions: p = 12 ... 25 bar (174 ... 363 PSI), t = -40 °C ... +220 °C (-40 °F …... +428 °F), n = 1,660 min^-1.

Metal bellow seal for highly viscous media

At the UPM Pietarsaari pulp mill in Finland, a Sulzer APP 23 pump is sealed with an EagleBurgmann Mtex-TN. This cartridge version of the metal bellows seal is particularly suitable for highly viscous media at low temperatures.

Operating conditions: p = 1 bar (15 PSI), t = 120 °C (248 °F), n = 1,500 min^-1. Medium: Tall oil.

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Chest agitators with semi-split mechanical seal

Chest agitators at Sappi in Lanaken/Belgium were retrofitted to EagleBurgmann HGH type semi-split mechanical seals. Since then, product leakage has been drastically reduced and plant availability has noticeably increased.

perating conditions: p = 0.5 bar (7.25 PSI), t = 20 °C … 40 °C (68 °F … 104 °F), n = 300 min^-1.

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