Modern Silicone Technologies Inc. has added 99 heavy-duty gaskets and seals for common Class 3 to Class 8 diesel truck engines.

Magnum Heavy Duty Gaskets coverage includes Ram Cummins, Ford PowerStroke, GM Duramax, Navistar DT466, Caterpillar C7 through C15, Detroit Diesel Series 60 and a variety of Cummins engines.

“MSI is one of the few companies in the world with the huge molding presses and precision tooling required to successfully mold the large format, complex gaskets found on today’s diesel engines,” Alex Grunfeld, executive vice president of MSI, says. “MSI has been the premier heavy-duty gasket manufacturer to OEMs and major aftermarket brands for nearly 20 years. Now, we’re serving the aftermarket directly under the Magnum brand.”

The company says more than 90 percent of its Magnum products, including most Magnum Heavy Duty Gaskets, are designed, manufactured and packaged in the U.S.