Dual Piston Ring

Greene Tweed’s 3356 Dual Piston Rings series is intended for hydraulic service in piston applications where very low friction is desired and some controlled leakage can be tolerated. Piston rings are step cut for ease during installation. The step cuts are 180° apart and secured in place by an engineered thermoplastic anti-rotation pin. The pin eliminates the need for a specially designed wave spring, reducing the chance of installation challenges and stress cracking of the spring. Greene Tweed’s 3356 Dual Piston Ring series is designed to be used in bores in accordance with MIL-G-5514 and AS4716 specifications.