VETUS O-Ring D 48 x 3mm NBR 70 Shore

The VETUS O-Ring D 48 x 3mm NBR 70 Shore is a critical OEM-grade sealing component engineered specifically for marine engine cooling and exhaust systems. Designed for use in Vetus mufflers, waterlocks, and gas/water separator assemblies, this o-ring maintains pressure integrity in freshwater and saltwater cooling circuits where reliability directly impacts engine longevity. If you're rebuilding a marine engine cooling system, replacing worn seals on aftermarket waterlock installations, or servicing Vetus marine equipment, this precision-molded seal ensures zero coolant leakage at connection points.

Manufactured from NBR (nitrile rubber) compound rated at 70 Shore hardness, the VETUS O-Ring D 48 x 3mm delivers excellent chemical resistance to engine coolants, seawater, and fuel vapors while maintaining elasticity across the temperature range typical of marine engine compartments. The 48mm outer diameter and 3mm cross-section dimensions are precisely molded to eliminate gapping and maintain consistent compression under pressure cycling. NBR 70 Shore provides optimal durometer—soft enough for reliable sealing on irregular surfaces, yet durable enough to resist extrusion and premature failure in high-vibration marine engine environments.

This seal fits Vetus models including NLP40, NLPH40, NLPG40, WLOCK40R, LSS40A, LGS4038, NLP45, NLPH45, NLPG45, and WLOCK45R marine muffler and waterlock configurations. Mechanics performing cooling system overhauls or DIY boat owners replacing corroded or hardened seals will find this OEM part essential for preventing coolant leakage and maintaining proper engine temperature regulation. Stock a VETUS O-Ring D 48 x 3mm NBR 70 Shore in your marine maintenance kit to ensure reliable repairs and eliminate repeat service calls caused by inadequate sealing.