Seals and gaskets prevent leakage of oil, coolant, fuel, and combustion gases between mating surfaces throughout the engine. Cylinder head gaskets maintain the seal between the block and head under extreme pressure and temperature. Oil seals at the front and rear of the crankshaft prevent lubricant from escaping the engine. O-rings provide sealing at tube connections, filter heads, and housing joints. During any engine service or overhaul, seals and gaskets in the affected area are routinely replaced as a matter of best practice — reusing old gaskets risks leaks due to compression set, hardening, or surface damage.
AMS Parts supplies a wide range of seals & gaskets components for Cummins engines used in power generation, marine, and industrial applications. Browse a selection of available parts below, or contact us for specific requirements.
Below is a selection of seals & gaskets parts we supply. Use the search bar above to find a specific part number, or request a quote. You can also reach us directly at [email protected] or +44 7776 800169.
Yes. Gaskets are designed for single use in most applications. Once compressed, they lose their ability to seal reliably. Cummins overhaul kits include the gaskets and seals required for the scope of work being performed.
Common causes include overheating, incorrect cylinder head bolt torque, warped mating surfaces, or simply reaching end of service life. Symptoms include coolant in the oil, white exhaust smoke, external leaks at the head-to-block joint, or combustion pressure in the cooling system.
O-rings are specified by material (rubber compound), size (inner diameter and cross-section), and temperature rating. The correct part number for each application is listed in the Cummins parts catalogue. Using the wrong size or material can result in leaks or premature failure.
