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Special seals

In addition to the standard seal assortment, SNLN 30 housings are available, on request, with high-temperature seals, taconite heavy-duty seals with an axial labyrinth or custom seals for special applications.

High-temperature seals

For high operating temperatures, up to 250 °C (480 °F), high-temperature felt seals should be used. The felt seals can accommodate circumferential speeds up to 2 m/s. They are identified by the designation suffix CB, e.g. TSN 3024 CB.

Taconite heavy-duty seals with an axial labyrinth

Taconite heavy-duty seals with an axial labyrinth (TSN .. NC, fig. 1 or TSN .. NB, fig. 2) can be used under the same conditions as taconite seals with a radial labyrinth. The seals are greased via a hole in the housing cap. Therefore, they can only be used with housings with the suffix T (at the end of a shaft) or the suffix TD (for through shafts).
TSN .. NB seals have a V-ring. It limits the axial movement of the shaft relative to the housing to ±1,5 mm.
Specifications for the seals are listed in table 1.

Custom seals

SNLN 30 housings can be equipped with any type of seal that fits the seal groove dimensions in the housing. The relevant dimensions are provided in table 2.
Custom seals can be supplied by SKF. For additional information, contact the SKF application engineering service.
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