The axial clamp seals are designed for large and very large diameters and are eminently suitable as secondary seals for applications where otherwise the primary seals would be subjected to excessive quantities of particulate contaminants or water. The seals do not rotate but seal axially against a rotating counterface.
These axial clamp seals are made of appropriately profiled strips of non-reinforced nitrile rubber which are held firmly in place by stainless steel screw-type clamps. They are available in the diameter range 150 to 4 600 mm.
The standard range of axial clamp seals basically comprises seals intended for inch-diameter seats. However, as normally the seals are mounted with an approximately 25 mm gap between the ends, they may be used for appropriate metric-size seats. In case of doubt, please contact the SKF application engineering service.
SKF axial clamp seals are produced in two different designs:
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CT1 |
CT4 |
CT1 design
Axial clamp seals of the CT1 design have a flat face sealing lip and are held in position by a screw-type clamp. The maximum permissible axial displacement (operating interference) with respect to the counterface is +2,4 mm.
CT4 design
Axial clamp seals of the CT4 design are extra wide and have a double clamp. The maximum operating interference is +4,8 mm. The sealing lip is flat as for the CT1 design.
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