Custom Piston Rings Made to Order
Cast Iron Piston Rings
Available in diameters ranging from 1″ to 30″, including oversize and metric diameters. Custom manufacturing to meet your exact specifications.
Stainless Steel Piston Rings & Seals
For immediate shipment, we stock many common sizes of stainless steel plunger rings.
Bronze Piston Rings
Ideal for hydraulic, hydroelectric, and lock/dam applications. Our bronze rings offer lower friction and are less brittle than cast iron.
Shurseal Piston Rings
Reliable and durable for a variety of industrial uses.
Servo Motor Piston Rings
Servo motor piston rings are designed specifically for use in these unique machines. Because servo motors are generally very large, the rings need to be specifically shaped to fit in these precise mechanisms.
Lokseal Piston Rings
AD Piston Ring manufactures a Lokseal Piston Ring, which is equivalent to our Shurseal piston ring developed by us for better sealing capabilities with the least amount of leakage
Ad Hook Step Piston Rings
AD Piston Ring manufactures a Hook Step Piston Ring, which is a custom joint configuration, developed by us for best uses a sealing ring in blind installations
Steam Engine Piston Rings
AD Piston Ring manufactures piston rings for steam engines. Steam engine piston rings can be made of cast iron and bronze aluminum materials.
Custom Piston Rings
AD Piston Ring has been manufacturing custom piston rings and seals since 1921 for your demanding sealing application. You can send us your drawing and we can quote you, usually within 24 hours. Custom piston rings can be made of a wide variety of materials including
cast iron, stainless steel, bronze and other materials for specific harsh temperature and environmental conditions and sizes from 1 inch to 30 inches.
Crafted for Perfection
Rush Service Available
Fast Delivery
Custom Seal Manufacturing
Made-to-order piston rings.
Trusted Manufacturers Since 1921
Decades of trusted quality.
Your Trusted Partner for Precision Piston Rings
At AD Piston Ring, we specialize in manufacturing high-quality piston rings for various applications, including hydraulic cylinder repair, compressor repair, and pneumatic systems. We are also experts in producing stainless steel plunger rings for zinc die casting machines.
Made in the USA
All AD Piston products are proudly manufactured in the USA, ensuring quality and precision. Learn more about our expertise and commitment to quality.