NILOS®-Ring “Type LSTO” steel-disk seals can provide superior protection for grease-lubricated bearings exposed to extreme levels of contamination.  Applications for these specialized bearing seals include lubrication and fluid power equipment; construction, mining, paper, and agriculture machinery; and conveyor rollers, among others.

Type LSTO steel-disk seals satisfy key performance requirements by minimizing bearing friction losses and heat build-up and preventing lubricant leakage and penetration of dirt.

The non-contact, grease-filled labyrinth sealing elements consist of laminated steel-seal disks and steel cores.  The seals resist axial pressure and will not slip when clamped in the axial direction of both the inner and outer periphery of a roller-bearing ring.

Type LSTO steel-disk seals are available for use with a wide range of shaft and casing diameters and are provided ready-to-install for quick and easy mounting.

They can further be customized to meet application-specific requirements.

Contact Kody T. Fedorcha, SKF Linear Motion & Precision Technologies, 1530 Valley Center Parkway, Bethlehem, PA 18017-2266 USA.  Phone: 800-541-3624 (toll-free) or 610-861-3733.  Fax: 610-861-3737.  Web site:

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