Modular Gas-lubricated Cartridge Seal for Mixer and Agitator Applications – is7828

is7828 is part of the is7800 Vessel Seal Family. The is7800 family consists of heavy-duty, dual-pressurized, back-to-back, pusher cartridge seals designed for mixing and agitating equipment. This flexible seal family incorporates modular hardware to provide maximum interchangeability and is available in four different configurations (7828G, 7828GD, 7848W, 7848D), which are specified by the applied seal face technology. Type is7828 is characterized by the use of non-contacting, gas-lubricated seal faces with unique spiral groove technology developed and patented by iseal. For details on the wet- and dry-running versions, please see product description of seal Type is7848.

is7828 is available in two variants. On the is7828G, both inboard and outboard primary rings have spiral grooves, and are therefore operating as non-contacting seals. Where reduced barrier gas consumption is desirable, the is7828GD, a hybrid seal that offers a combination of non-contacting gas seal inboard and contacting dry-running seal outboard, would be recommended. Advantages of gas-lubricated seal is7828 (G, GD) include the non-contacting, wear- and particle-free operation, the freedom from contamination by barrier liquid together with a cost-efficient, easy-to-install (gas) supply system. This makes these seals the perfect solution for high-end pharmaceutical applications.

The is7800 Vessel Seal family was originally developed for the North American market. Therefore all measurements follow imperial units and standard designs are available for inch-sized agitator shafts from 1.000″ to 5.000″. Adaptations to interim or metric sized shafts are available on request. The Type 7800 Series generally accommodates large amounts of radial runout. Therefore, and due to the specific non-contacting face design, the 7828 (G, GD) is able to work without integrated trust bearing. Nevertheless, a radial bearing option for additional shaft stability is available.

Product Description IS7828

Product Description is7828

The universal vessel seal (7800 Series) is a modular cartridge seal for use in a wide variety of mixing and agitating equipment and covering a broad application range. The is7828G and is7828GD are heavy duty, gas-lubricated double seals designed for top entry mixers. The universal vessel seal uses modular hardware that provides maximum interchangeability. Four combinations of seal face technology provide the user with unmatched flexibility and value.

is7828G – Non-contacting, gas lubricated double seal uses dry nitrogen as a barrier gas and patented spiral groove technology to separate the primary seal faces eliminating contact and creating a wear free environment, which insures 100% product purity and no batch contamination. Patented features enable the seal to maintain lift-off in the presence of extreme radial runout and even angular misalignment of the seal faces. The cartridge is reverse pressure balanced and will remain closed in the event that barrier gas pressure is lost. Materials of construction are FDA approved.
is7828GD – Where reduced barrier gas consumption is desirable, the is7828GD is a unique hybrid that offers a combination of non-contacting seal faces inboard and dry contacting faces outboard. Type is7828GD uses adaptive hardware that is identical to the is7828G

Applications

Mixer and agitators
Other rotating equipment

Features is7828

California Residents: PROPOSITION 65 WARNING
Dual-pressurized cartridge seal for steel vessels
Back-to-back seal arrangement with balanced faces
Gas-lubricated (7828G) or contacting dry-running (7828GD) face options available
Reversed pressure capabilities inboard
Accommodates large amount of radial shaft run-out
Bearing option available
Debris well options available
Broad range of material option include FDA or USP compliant materials
Standard design for inch-sized agitator shafts (1.000″ – 5.000″)
Special designs, interim or metric sizes and material options on request

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