MACGREGOR – N-RING PISTON SEAL – COMPRESSOR SPARE

The MacGregor N-Ring Piston Seal is a high-performance marine air compressor spare component engineered to provide exceptional dynamic sealing and pressure retention across compressor piston assemblies. Precision-molded from advanced, wear-resistant elastomeric or PTFE-based compounds, this specialized seal ring features a flexible N-profile cross-section designed to maintain constant, responsive sealing force against cylinder liner walls—even under fluctuating system pressures and severe thermal cycles. Built to withstand continuous mechanical friction, hot crankcase oil exposure, and intense engine room vibration, it prevents air blow-by and lubricant bypass into compression stages. Tailored for exact fitment within MacGregor marine air compressor systems, it minimizes drag, preserves peak volumetric compression, and delivers long-term operational reliability for commercial shipping vessels, cargo equipment, and offshore installations.