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Custom Seal & Piston Ring Manufacturing Capabilities

Custom formed and manufactured piston rings and seal rings are essential to the successful functionality of any engine. They are specifically designed to form a seal between the piston and the cylinder wall. Once the seal is formed, pressurized combustion gases are prevented from escaping.

Precision Rings understands custom quality manufacturing. Designing and manufacturing custom piston rings for over 70 years, and providing the highest level of quality standards for all their project designs. Whether it’s custom design manufacturing, heat treatment, turning, grinding, or milling, Pri’s experts provide a quality assurance process and ISO certifications, to provide what is needed.

Learn more about Precision Ring’s piston ring and seal ring custom design and manufacturing capabilities, by contacting the sales team or call 317-247-4786 for assistance. Precision Rings Incorporated is the trusted source for high-quality custom manufactured piston seal rings.

Piston Ring & Seal Ring Custom Capabilities

Precision Rings is a leading manufacturer and supplier of industrial piston rings, with a focus on custom design and fabrication, and providing the following custom power generation design and engineering manufacturing capabilities:

Piston Rings

Precision Rings specializes in piston rings for harsh environments, including extreme temperatures, high pressures, and tight tolerance requirements. The experts can manufacture piston rings from custom prints and provide custom piston ring engineering services that are designed to the application requirements.

Seal Rings

Custom manufactured seal rings provide enhanced sealing capabilities for a broad range of applications. Seal rings are typically used in applications where leakage is critical. Types of seal rings include, but are not limited to, two piece and three-piece ring assemblies.

Contracting & Expanding Rings for Power Generation

Precision Rings Incorporated has been designing and manufacturing expanding rings and contracting rings used in power generation for decades. Piston rings produced are used in the nozzles of large turbines, sealing different sections or stages, and in gearboxes. Precision Rings also manufactures shaft seals for use in sealing a spinning shaft against a stationary housing. Commonly referred to as contracting rings, these rings seal on the inside diameter.

Custom Design & Engineering

Precision Rings, Inc., designs, engineers, and manufactures custom industrial piston rings and seal rings. They can manufacture seal and piston rings from an existing print, or can use the many years of engineering experience to design a custom piston ring solution for the most challenging application.

Custom Eco-Friendly Seal Ring Manufacturing

Proper seals promote an all-around healthier environment. Whether it’s preventing harmful substances such as jet fuel and “heavy” water from nuclear power plants from entering the environment, eco-friendly seal rings provide the needed leakage protection.

Custom Piston Ring & Seal Industries Served

Precision Rings, Inc. is a custom piston ring and seal manufacturer for all types of industrial applications. They custom design, engineer, and manufacture piston seals and rings for the following industries:

  • Aerospace
  • Aircraft
  • Industrial
  • Nuclear
  • Power Generation
  • Steam

Manufacturing Large Diameter Rings

Need large diameter rings manufactured from an existing print? Precision Rings manufactures rings with different gap configurations and different ring types based on the application requirements. Whether it’s rings as small as 0.200 of an inch in diameter or large diameter rings over 100 inches, Precision gets it done!

Heat Treatment

Precision Rings’ custom heat treating process is ISO 9001:2015 + AS9100D and Nadcap approved and provides the following temperature standards:

  • Furnaces: 2250°F (1232°C)
  • Deep Freeze: -100°F (-73°C)


Precision Rings’ innovative turning processes are extremely accurate, providing precise results for a wide range of applications. Turning features include:

  • CNC Lathes
  • Accuracy +/- .0002
  • CNC Machine Centers
  • Repeat Accuracy: +/- .0002
  • Vertical Turret Lathe
  • Accuracy: +/- .0005


Precision Rings’ grinding capabilities include the following capabilities:

  • O.D. and I.D. Accuracy: +/- .0002
  • Blanchard Accuracy:  +/- .0004


Precision Rings’ custom milling processes provide exceptional results that are extremely accurate. Milling features include:

  • Repeat Accuracy: +/- .0002

Coordinate Measuring Machine (CMM)

Coordinate measuring machines (CMM) accurately measure a part’s height, width, and depth. CMM machine accuracy measurements provide the following range:

  • Accuracy: +/- .0002

Contact Precision Rings for Custom Seal & Piston Ring Manufacturing Capabilities

Learn more about Precision Rings’ custom piston and seal ring design and engineering services by contacting the sales team or calling 317-247-4786 for assistance. Precision Rings, Inc. is the premier source for advanced piston ring and seal ring design and manufacturing capabilities.

©2022 Precision rings incorporated - 5611 Progress Road - Indianapolis, Indiana 46241
Phone: 317-247-4786