FEY Labyrinth Sealing Rings

Protect components in dirty and abrasive environments up to 700oC

fk3 asK single laminar sealing rings combined for bores

Application FK3 ASK ‘Outside clamping combined single laminar sealing rings (1 set = 5 rings) 

Single wound laminar sealing rings ‘FK3 ASK’ are used as a grease seal for roller and plain bearings and they
protect, if greased, against dust entry and ambient moisture. Due to the increased labyrinth effect, the sealing effect is optimized by the additional sealing of the groove base diameter.

The "FK3 AS" or "FK3 ASK" assemblies are normally preferred over the "FK3 IS" or "FK3 ISK" assemblies due to their easier installation into the grooves. Depending on the applications or the technical requirements, the ring carriers can be manufactured from steel, cast iron, light alloy or plastics.

Permissible circumferential speed (in m/s)       Axial and/or radial play   FK3 ASK ring set

Axial and/or Radial Play 

The groove width ‘A’ must be widened by twice the play if play occurs in the area of the rings. The groove base diameter ‘D2’ must be reduced by the radial play if radial play occurs. Damage to the rings and the surrounding components occur if this is not adhered to. It is recommended to use the full groove width tolerances, especially in the case of thermal expansion.

Ordering Information

The ring diameter information must match the housing or shaft diameter dimensions ‘D1’ for all enquiries and/or orders. The rings can be ordered individually or in sets (1 set = 3 AS rings + 2 IS rings).

Run and Installation Tests

Run and installation tests under operating conditions must be performed in each case before standard production of FEY laminar sealing rings can begin to determine whether the desired sealing effects can be achieved.

Installation / Ring Materials / Dimension Table