Agitator seal for bead mills

A Korean chemical company seals its Bühler bead mills for paint production with MR1S1F-D24 type mechanical seals. The process medium – colored pigments with various solvents – is very abrasive.

Magnetic coupling seals cleaning agents

A Roth pump, sealed with a MAK66 magnetic coupling, in use at a manufacturer of soap and cleaning agents in the US.

Operating conditions: p = 22 bar (319 PSI), t = 50 °C (122 °F), n = 3,500 min^-1.

Agitator seal in polymer dispersion production

Wacker Chemie AG in Burghausen, Germany, seals a number of top-drive high pressure reactors for polymer dispersion production with HSHLV-D type high pressure seals with cooling flange. A shared buffer system supplies all the seals.

Operating conditions: p1 = vacuum … 100 bar (1,450 PSI), t = … 100 °C (212 °F), n = 25 … 100 min^-1.

Expansion joints in steam and pigment production

Dupont de Nemours and Company in Pass Christian, MS, USA, uses several expansion joints in steam / colored pigment production.

Operating conditions: p = +0.48 … -0.48 bar (+70 ... -70 PSI), t = 354 °C (669 °F).

Dual cartridge seals for centrifugal pumps

Centrifugal pumps at Polymer-Latex GmbH in Marl, Germany, are successfully sealed with Cartex-DN type seals. The process medium – a latex dispersion – represents a challenge for the seal. The FLC200 flow rate control unit supplies and flushes the seal.

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Agitator seals for polymerization reactors

Sealing of polymerization reactors with an HSMR5L-D in the production of synthetic rubber at Lanxess Deutschland GmbH. The process medium – monomers, water and polymers – has a tendency to bond. So flushing is used to protect the seal. An SPA4025 buffer pressure system is used as the supply system.

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Agitator seal for vacuum dryers

Gas-lubricated AGSR3L-D agitator seals in vacuum paddle-wheel dryers for liquid crystal production at Merck KGaA in Darmstadt, Germany. The process medium – organic crystalline substances in various solvents such as toluene and methanol – has a pronounced tendency to form deposits, so a patented flushing process is used upstream of the dynamic sealing element on the product side to protect the seal and to improve the cleaning efficacy. A GSS4012 is used as the buffer and flush gas system.

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Pure PTFE seals for glass-lined vessels

Tytan Organics Chemical Co. in the United Arab Emirates uses glass-lined reactor vessels to produce concrete plasticizers. The flanges and covers are sealed with Burachem multi-gaskets made from pure PTFE. Medium: Napthalene sulphonate formaldehyde.

Operating conditions: p = 6 bar (87 PSI), t = 220 °C (428 °F).

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