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High-Temperature Steam Turbine Bearing Isolator

Permanently protect against contamination ingress and lubrication loss in process steam turbines in high-temperature environments (above 200°C [400°F]).

The High-Temperature Steam Turbine Bearing Isolator utilizes multiple features to ensure effective and permanent bearing protection. The stainless steel Flinger deflects steam away from the bearing housing while the unique stator/rotor design of the XX Interface blocks steam and other contaminants from entering the bearing housing. The D Groove protects against oil loss by capturing oil on the shaft and returning it to the bearing housing. Carbon Packing is used in high-temperature environments to drive the rotor.

The High-Temperature Steam Turbine Bearing Isolator can be custom engineered to meet the requirements of your application and operating environment.

Same day shipments and split designs are available.

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  • XX Interface: unique stator/rotor interface provides permanent protection against contamination ingress
  • D Groove: captures oil on the shaft and returns it to the bearing housing
  • Flinger: deflects steam away from the bearings
  • Carbon Packing: drives the rotor in high-temperature environments
  • Standard Material: Bearing Bronze and 416 Stainless Steel
  • Radial Movement: 0.38 mm (0.015")
  • Temperature Range: up to 649°C (1200°F)
  • Speed: 10,000 rpm
  • Shaft Size: 15.88 mm (0.625") to 76.20 mm (3")


Consult an Inpro/Seal representative for operating conditions outside of limits shown.