Remflex Exhaust Manifold Flange Gasket

Why Remflex Exhaust Manifold Flange Gaskets Stand Apart

When an exhaust manifold flange leaks, the culprit is almost always the same: thermal cycling warps the metal, leaving gaps that conventional gaskets simply cannot bridge. Remflex was built specifically to solve this problem, and their approach to exhaust manifold flange gaskets is unlike anything in the conventional gasket market.

100% Flexible Graphite — The Core Technology

Remflex's unique flexible graphite material has been proven for more than 30 years in industrial applications, where temperatures routinely exceed 2,000 degrees — day after day, week after week, year after year. That industrial-grade pedigree is what sets these gaskets apart from composite or fiber-based alternatives that simply were not engineered for the sustained heat of a performance exhaust manifold.

Made from 100% flexible graphite, these unique gaskets come in a standard 1/8" thickness and are designed to crush 50%, allowing them to fill gaps in the flange surface. This built-in crush factor is critical at the exhaust manifold flange, where even minor warping — common after years of heat cycling — can create leak paths that standard rigid gaskets cannot conform to.

Key Performance Characteristics

• Extreme Heat Tolerance: Made from 100% flexible graphite, these gaskets can withstand temperatures up to 3,000 degrees Fahrenheit and will not burn out, shrink, or leak.
• 50% Crush, 30% Rebound: A built-in 50% crush allows Remflex gaskets to fill gaps in headers or exhaust manifolds up to 1/16 inch. These exhaust gaskets also rebound 30%, creating an optimum seal that eliminates the need to re-torque.
• Fills Warped Flanges: Remflex gaskets fill voids on warped header flanges and exhaust manifolds — one of the most common failure points on high-mileage and performance engines alike.
• Lower Torque Requirements: Remflex exhaust gaskets are soft and compressible, so the suggested torque for each gasket — which is generally much lower than factory torque — is listed on the back of each package. This reduces the risk of stud breakage during installation.
• Proudly Made in the USA: Remflex exhaust gaskets are proudly made in the USA.

The Right Gasket for Manifold Flange Applications

Remflex specializes in exhaust gaskets, including header gaskets, collector gaskets, and exhaust flange gaskets, featuring a unique flexible graphite material that covers a broad range of domestic and import applications. Whether you are restoring a classic muscle car, maintaining a daily driver, or building a performance engine, Remflex's exhaust manifold flange gaskets are engineered to provide a permanent, reliable seal where factory-style gaskets repeatedly fail.

Browse all 18 Remflex exhaust manifold flange gasket options available here and find the right fit for your application — because an exhaust leak that keeps coming back deserves a solution that was designed from the ground up never to fail.