The 648005P015 piston ring is an OEM Continental compression ring used in certified aircraft piston engines. It is part of the piston ring set and is designed to maintain combustion sealing, regulate oil consumption, and ensure efficient heat transfer between the piston and cylinder wall. The “P015” suffix indicates a specific oversize/fit class used during engine overhaul to match cylinder bore tolerances and piston assembly requirements.

This ring is commonly used within Continental 520/550-series engine ring families depending on configuration and overhaul specifications.

Reference listings confirm it as a Continental OEM piston ring supplied for certified aviation engines and overhaul programs.

Key features include:

Genuine Continental OEM piston compression ring
Precision-machined steel alloy construction
Designed for tight combustion sealing and stable compression
Controls oil film on cylinder walls to reduce oil consumption
High-temperature and high-pressure aviation operation capability
Wear-resistant surface treatment for long service life
Part of multi-ring piston sealing system (compression + oil control stack)
Matched to specific bore and piston fit class per overhaul manual
FAA-approved aircraft engine component
Used in Continental engine overhaul, repair, and maintenance procedures