Remflex Exhaust Collector Gasket
Remflex Exhaust Collector Gaskets: The Last Gasket You'll Ever Need
When exhaust gases escape at the collector — the point where individual header tubes merge into a single outlet — the consequences range from annoying ticking noises to lost performance and even hazardous fumes entering the cabin. Sealing this junction permanently is a challenge that stumps conventional gasket materials. That's exactly the problem Remflex was built to solve, and their exhaust collector gaskets represent some of the most technically advanced sealing products available to performance and everyday drivers alike.
Why Graphite Changes Everything
Most exhaust gaskets on the market rely on composite materials — blends of natural fibers and synthetic compounds bound together with rubber. These composite materials are vulnerable by design: it's only a matter of time until extreme exhaust system temperatures burn the composite materials away, resulting in an exhaust leak. Remflex takes a fundamentally different approach. Remflex exhaust gaskets are made from 100% flexible graphite and can withstand up to 3,000 degrees F — so they are not affected by exhaust heat and won't burn out, shrink, or leak.
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 — and they are now bringing this technology to enthusiasts of all kinds to eliminate exhaust leaks for good.
Built-In Crush: Sealing Warped Flanges at the Collector
One of the most persistent failure points at an exhaust collector is flange warping. Constant thermal cycling — especially in high-performance and high-load environments — causes warping of header flanges and cast iron exhaust manifolds, and once the sealing surface is warped, leaks are imminent. Remflex collector gaskets are engineered specifically to handle this reality. They come in a standard 1/8" thickness and crush 50%, allowing them to fill gaps in the flange surface up to 1/16".
The benefits don't stop at installation. Remflex exhaust gaskets rebound 30%, creating an optimum seal that eliminates the need to re-torque. Unlike traditional gaskets, they won't shrink, so they never require re-torquing. For anyone who has spent time chasing an intermittent exhaust tick only to find a loose collector bolt, this feature alone is a significant advantage.
Coverage Across Collector Sizes and Configurations
Remflex Inc. specializes in exhaust gaskets, including header gaskets, collector gaskets, and exhaust flange gaskets. Their collector gasket lineup spans a wide range of inside diameters and bolt-hole configurations — including 2-bolt and 3-hole designs in popular sizes such as 2.5", 3.0", and 3.5" inside diameter — making them suitable for street machines, dedicated track cars, and custom header builds alike. They are made from a high-temp fiberglass core with a 100% flexible graphite body — a unique material that will conform to any shape, allowing the gasket to fill gaps caused by cylinder head corrosion or a warped manifold or header.
Who Should Use Remflex Collector Gaskets?
Whether you have an old pick-up that needs a manifold gasket or a race car with custom-built headers, you can be assured that Remflex exhaust gaskets will work properly every time. The combination of extreme temperature tolerance, built-in crush, and permanent sealing without re-torquing makes Remflex collector gaskets a strong choice for anyone building or refreshing a performance exhaust system. Browse the full Remflex brand catalog or explore all available exhaust collector gaskets to find the right fit for your application.