AD Piston Ring, LLC.

AD Piston Ring, an American manufacturer founded in 1921 and headquartered in Cleveland, Ohio, specializes in producing precision-engineered piston rings for industrial applications such as hydraulic systems, compressors, and pneumatic machinery. The company also manufactures stainless steel plunger rings specifically designed to protect tips on zinc die casting machines.

• Products: Custom cast iron and bronze piston rings ranging from 1" to 30", alongside stocked stainless steel plunger rings between 3/4" and 7".
• Services: Made-to-order manufacturing with rush service options available for immediate delivery needs.
• Industries: Serves sectors including hydraulic cylinder repair, compressor maintenance, pneumatic systems, and die casting machinery operations.

The firm maintains a legacy of over a century in American manufacturing while continuously investing in new machinery to enhance quality control standards.