Chesterton 50K Mill Rotary Face Seal

Chesterton 50K Mill Rotary Face Seal
High-Performance Face Seals for Bearing and Gearbox Protection


​​​​​​​​​​​​​​​​​​​​Availability: North America, Europe, Middle East, Africa​​​

Chesterton 50K face seals are high-performance face seals for heavy duty, dynamic rotary seal applications.​ These seals reduce the ingress of solid particles, dust, and fluids—​protecting housing and bearing areas.

In severe applications, where exposure to external contaminants is extremely high, the 50K is used as secondary seal for addition​al protection in combination with other Chesterton rotary seals, which are in the primary seal position.  

The unique design allows the 50K face seals to be used in a broad range of equipment across the heavy duty industries. High-performance elastomers create resistance to compression setting, wear, and aging. A broad range of engineered elastomers allow use in high and low temperature conditions and provide excellent fluid compatibility.

The 50K is manufactured by compression molding technology that provides accurate dimensional, geometrical tolerances, and improved fitting. According to industrial standards sizing, the 50K is a direct retrofit, which eliminates the need of equipment modification. The 50K is offered in different designs based on application requirements.

Typical Applications: Back-up rolls of hot and cold rolling mills; work rolls of hot and cold rolling mills; windmill applications; cement plans, power plants, rotary presses; calander lines

Robust seal design stops contaminants from entering housing
High-performance elastomers ensure plant-wide usage and long service life
Optimized lip interference for low friction
​​Direct retrofit eliminates equipment modification
Mount and stretch directly on the shaft for easy installation
MaterialsNBR70FKM 70
Lubricating Greases-20°C to 100°C (-4°F to 212°F)-20°C to 150°C (-4°F to 302°F)
Water5°C to 100°C (41°F to 212​°F)5°C to 80°C (41°F to 176°F)
Surface Speed m/s (ft/min)12 m/sec (2362 ft/min)*20 m/sec* (3927 ft/min)
Technical Pressure MPa (psi)0.03 (4.35)0.03 (4.35)
Size Range mm (inch)** shaft dia200 to 1650 (8 to 65)200 to 1650 (8 to 65)

*At over 8 m/s (1574 ft/min) the seal has to be supported in an axial direction while over 12 m/s radial (2362 ft/min) retention is needed.

**Please contact your Chesterton representative for other sizes.



Product Datasheet: 50K (English) Datasheet: 50K (English)pdf



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