Compression & Piston Ring Examples
- 63.50 mm Piston Rings Set (Standard) – Set of 63.5 mm diameter rings suited to compressors or piston applications around that bore size (close to Copeland 63.5 mm standard) — often sold for air compressors and similar machinery.
- Piston Ring for Copeland 8CC75 – Piston ring compatible with Copeland compressors (example size category).
- Piston Ring COPELAND D3D – General Copeland piston ring (note: diameter slightly different), useful to see typical design if exact 63.5 mm isn’t listed.
? About these rings:
These are circular metal rings that fit into grooves on the piston to help seal combustion/pressure chamber and control lubrication in a compressor. For Copeland refrigeration reciprocating compressors (like 4RA/6RA with ~63.5 mm pistons), piston rings like OEM references 025‑0002‑00 / RNG‑0068 (Ø 63.60 mm × 1.60 mm) are commonly used.