Cometic Gaskets and Sealing Systems

About Cometic Gasket

Cometic Gasket has been one of the most trusted names in engine sealing since its founding in 1989. Cometic was launched by four partners, including current Founder and CEO Bob Gorman, and was originally focused exclusively on the powersports industry. Starting from a modest 1,500-square-foot facility, the company has since grown into a global leader — now operating out of a 70,000-square-foot, state-of-the-art research, development, and manufacturing center in Concord, Ohio.

Today, Cometic serves an enormous range of markets, including domestic automotive, sport compact, drag racing, road racing, V-twin, diesel, ATV, MX/dirt, snowmobile, off-road, personal watercraft, and street applications. With over 85,000 SKUs in its catalog, the brand has become the go-to source for professional race teams and weekend builders alike. All Cometic products are proudly made in the United States using American-sourced materials.

What Sets Cometic Apart

At the core of Cometic's reputation is its relentless focus on material science and manufacturing precision. The brand's signature MLS (Multi-Layer Steel) technology uses multiple embossed layers of stainless steel combined with an Advanced Multi-Polymer Coating, engineered to deliver an exceptional seal while requiring less clamp load and producing less bore distortion than traditional gaskets. The MLX (Multi-Layer Xtreme) design takes this further by integrating a stopper layer around the combustion chamber for even more precise load control at the bore.

Cometic's in-house dynamometers and engine assembly rooms allow engineers to test and validate designs under real-world conditions before products ever reach customers. Whether the application calls for a custom bore size, a non-standard compressed thickness, or a material suited to extreme temperatures, Cometic's technical team works directly with customers to find the right solution.

Race-Proven Performance

Cometic's gaskets have been proven on some of motorsport's most demanding stages — from NASCAR superspeedways and NHRA/IHRA drag strips to top-fuel motorcycles and off-road racing circuits. The brand has been a proud supporter of organizations including NASCAR, the AMA, and GNCC, giving them unmatched insight into what it takes to keep engines sealed under the most extreme pressures imaginable.

That racing heritage translates directly into the products available for street and performance builds. Whether you're building a turbocharged sport compact, refreshing a classic muscle car, or rebuilding a Harley-Davidson Milwaukee-Eight, Cometic has a sealing solution engineered for the job.

Cometic Product Categories

Cometic's product lineup covers virtually every engine sealing need. The Engine Cylinder Head Gaskets are the brand's flagship offering, available in MLS and MLX configurations across a huge range of bore sizes and compressed thicknesses. Complete Engine Gasket Sets bundle everything needed for a top or full engine rebuild into one convenient package. For those tackling a top-end refresh, Engine Top End Kits provide a curated selection of gaskets specifically for above-the-deck work. The broader Gaskets & Seals category includes O-rings, seals, and individual gaskets for specific components throughout the engine, while Engine Valve Cover Gaskets round out the lineup with precise sealing solutions for the top of the engine.