Expanding Rings

Expanding rings (expanding seal rings) are used to create a shaft seal with outward tension. Primary sealing with an expanding ring is established at the ring’s outside diameter and the cylinder bore.

Expanding rings and ring seals are used in a variety of industries, particularly in turbines for steam, coal, nuclear, wind, and hydro electric power plants. Expanding rings often must be custom manufactured for the particular application, and it’s important to find an expanding ring manufacturer that is knowledgeable in the industry for custom expanding ring production.

Companies Providing Expanding Rings

  • Precision Rings. Precision Rings designs and manufactures custom seal and piston rings including expanding rings.


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