ASCOTT 1pcs Cylinder Liner Ring Cylinder Ring Replacement Part Compatible with CN55/CN70/CN80

Main Functions 
1. Cylinder Sealing and Guidance: Installed inside the cylinder, working with the sealing ring to maintain pressure in the cylinder chamber and ensure the piston gets enough force to complete the nailing action 
2. Piston Motion Guidance: Guides and positions the piston for reciprocating motion, keeping the piston aligned and preventing it from tilting or jamming 
3. Isolating Air Chamber: Separates high and low-pressure chambers inside the cylinder to ensure proper air flow direction