Custom Piston Rings

High-performance applications require performance-built custom piston rings. As a global industrial custom piston ring manufacturer, Precision Rings, Inc. (PRI) designs and manufactures a wide variety of custom piston rings and seal rings, including expanding rings and contracting rings.

Common custom piston ring requests include custom expanding piston rings, contracting piston rings, combination piston rings, pinned piston rings, and Marcel springs. PRI can manufacture from an existing print or help you with a custom piston ring design. Existing designs can be evaluated for potential improvement.

Contact us or call us at 317-247-4786 to consult with our engineering department for proper ring selection or to inquire about a ring style not illustrated. Our engineers can help you select the custom piston ring best suited for your application requirements.

EXPANDING PISTON RINGS / EXPANDING SEAL RINGS:

Used when the ring must contact the cylinder bore and the ring groove is in the piston (outward tension). These are often used for power generation systems. Used in nozzles of turbines or to seal gearboxes.

CONTRACTING PISTON RINGS / CONTRACTING SEAL RINGS:

Used when the ring's I.D. must contact the shaft or rod and the groove is in the housing (inward tension). Contracting rings seal on the inside of the diameter, commonly used for shaft seals.

ONE PIECE PISTON RINGS / ONE PIECE SEAL RINGS:

The least expensive type of sealing rings and are available in many gap configurations.

TWO PISTON RING COMBINATION / TWO SEAL RING COMBINATION:

Offers better sealing characteristics than a single ring.

THREE PISTON RING COMBINATION / THREE SEAL RING COMBINATION:

Used when positive sealing is required. The inner ring effectively blocks leakage at the outer ring gaps.

PINNED PISTON RINGS / PINNED SEAL RINGS:

Used in butterfly valve applications.

MARCEL SPRINGS ASSEMBLED:

Sometimes used to help seat the ring and to dampen vibration.

MARCEL SPRINGS DISASSEMBLED:

Sometimes used to help seat the ring and to dampen vibration.

Piston Ring Material Options

PRI has extensive experience working with a variety of materials when designing and manufacturing custom piston rings. Our expertise includes manufacturing custom piston rings from the superalloys or other hard to machine materials. Commonly used materials include:

  • 300 and 400 Series Stainless Steel
  • 17-4 PH®
  • 17-7 PH®
  • Inconel®
  • Stellite®
  • Waspaloy®
  • Vespel DuPont®
  • Aluminum Bronze
  • Aluminum Alloy
  • A286
  • Hastelloy®
  • Torlon®
  • Titanium®
  • And more

Contact Precision Rings, Inc. for Custom Piston and Seal Rings

As a Nadcap and ISO 9001:2015/AS9100D certified manufacturer, Precision Rings, Inc. has the manufacturing expertise to manufacture custom piston rings that can meet your performance needs and exceed your expectations. To learn more about our piston and seal rings, contact us today or request a quote.

©2021 Precision rings incorporated - 5611 Progress Road - Indianapolis, Indiana 46241
Phone: 317-247-4786