925255
O-Ring
Mack

This O-Ring provides a critical sealing function in fluid systems across the truck, from fuel lines to hydraulic circuits. Its geometry creates a tight, compliant seal that accommodates subtle misalignments and temperature-induced dimensional changes without leaking. The material choice supports compatibility with common Mack fluids and resistances to swelling, extrusion, and chemical attack within specified service temperatures. In high-pressure environments, the O-Ring prevents seepage that would otherwise degrade performance, contaminate actuators, or create hazardous spills. Because it seals without reliance on adhesive or excessive torque on mating surfaces, it helps preserve gasket surfaces and prolongs the life of adjacent components. Proactive replacement of worn O-Rings reduces downtime and maintenance costs by preventing leaks and maintaining system integrity. Source One Parts Center.