Contracting & Expanding Rings for Power Generation


Precision rings, incorporated specializes in the manufacturing of seal rings and piston rings for use within the power generation industry. Pri can help design piston rings from scratch, by analyzing provided blueprints, or by reverse engineering an existing piston ring. Examples include fossil-fueled power turbines, steam turbines, nuclear power, wind power, and hydroelectric power.  

Precision rings incorporated (Pri) is an engineering and manufacturing provider of high-quality expanding piston rings for the power generation industry. Contact us or request a quote or design on custom piston rings today!

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Engineering drawings and tools

Custom Rings Made to Order

Since 1949, Precision Rings, Incorporated (PRI) has been manufacturing custom piston rings of .200" (5.08mm) to 100"+ (2,540 mm) in diameter.

PRI Offers:

  • Reproduction of Existing Rings
  • Piston Ring Fabrication from Drawings
  • Custom Piston Rings Designed from Scratch
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Piston & Seal Rings for Power Generation Applications

Precision rings, incorporated, produce expanding piston rings used in turbine nozzles, turbine sections or stages, and gearboxes. Pri also manufactures contracting ring shaft seals. These rings seal on the inside diameter. Additional applications include:
  • Fossil-fueled power turbines
  • Steam turbines
  • Nuclear power
  • Wind power
  • Hydroelectric power

Expanding Piston & Seal Rings for Custom Applications

For applications where the ring must contact the cylinder bore, and the ring groove is located within the piston (outward tension), custom expanding piston and seal rings provide the perfect option. These are often used for various power generation systems applications.

Piston & Seal Ring Material Options for Power Generation Applications
Precision rings, incorporated offers expanding piston rings and seal rings in various material options, including:

Pri’s Certifications and Quality Assurances

Precision Rings is committed to delivering quality custom piston and seal rings to industries throughout North America. Pri’s certifications and Quality assurances include:

Why Choose Pri for Power Generation Piston & Seal Rings?

Precision rings, incorporated (Pri), is an engineering and manufacturing provider of custom piston and seal rings used in highly sophisticated, high-temperature, and low-leakage power generation applications.

Contact Pri for Piston & Seal Rings for the Power Generation Industry Today

Contact Pri or call 317-279-5338 to consult with the engineering department for more information on custom-manufactured piston and seal rings today.
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