Rectangular Ring Seal Cummins Engine ISM – Engine M11 – Engine QSM

It creates a static seal between engine components, preventing leaks of oil, coolant, or pressure at the specific mounting point. The exact location varies depending on the engine configuration.

Cummins specifies that this product is primarily intended for use with non-certified 11-liter M11 engines; aftermarket catalogs also list the L10, ISM, and QSM models. Final compatibility must be verified using the engine’s serial number, as it may vary depending on the CPL and configuration.