SKU: RJS302109
MPN: 302109
The RJS Safety Gasket Fuel Cap 12-Hole Buna is a precision replacement gasket engineered for high-performance fuel cell fill plates used in motorsports, automotive racing, and off-road competition environments. This 12-bolt configuration gasket seals the fuel cap assembly against the fuel cell fill plate, preventing fuel vapor loss and maintaining pressure integrity during extreme vehicle operation. Built from Buna rubber—a synthetic elastomer selected for its resistance to fuel permeation and temperature stability—this gasket ensures reliable sealing across prolonged exposure to ethanol blends and high-octane racing fuels.
The 12-hole design matches OEM and aftermarket RJS fuel cell assemblies, providing a direct interface between the fuel cap and cell fill plate. Buna's chemical compatibility with gasoline, methanol, and nitromethane makes it the preferred elastomer choice for competition fuel systems where standard rubber compounds would degrade. The gasket's compact 0.45-inch thickness accommodates standard cap assemblies without requiring adapter plates or modifications. Replacement is straightforward—remove the 12 bolts, extract the worn gasket, install the new Buna gasket, and torque fasteners to spec. A single gasket deteriorates over time from thermal cycling, vibration, and fuel exposure; regular inspection and replacement prevents fuel leakage and maintains cell pressure during high-g cornering and acceleration.
This gasket is essential for drag racing, road racing, off-road motorsports, and any application where fuel cell integrity is mission-critical. Serious competitors and fabricators stock these replacement gaskets to avoid track downtime. The RJS Safety brand is known for fuel cell and fuel system components engineered to FIA and NHRA specifications, making this gasket a trusted consumable for drivers and teams who demand reliability under extreme conditions. Whether you're running a dedicated race vehicle or high-performance off-road platform, replacing a degraded fuel cap gasket is routine maintenance that protects your fuel system investment.
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