Custom Cork Gaskets

Custom cork gaskets are solid, compressible sealing rings made from natural cork material bonded with rubber. They seal static joints against oils, fuels, coolants, and water in moderate-temperature applications up to 250°F. Cork compresses easily under bolt load, conforming to irregular surfaces for reliable leak-free performance at pressures under 300 psi. Where cork gaskets work best Engine blocks, cylinder heads, and valve covers on older industrial and marine engines Transmission housings and gear boxes handling mineral oils Pump casings and water jacket seals in cooling systems Fuel tank caps and reservoir covers Compressor casings and pneumatic equipment Cast iron and aluminum flange connections requiring low clamping force When to use something else Silicone — for high-temperature exhaust and oven applications above 250°F Nitrile (NBR) — for synthetic oils, aggressive solvents, and higher pressures Neoprene — for ozone-resistant outdoor equipment and weather exposure PTFE — for extreme chemical resistance and ultra-low leakage requirements Specify your gasket dimensions and shape in our online quoter to see pricing instantly, then order with confidence — your custom cork gaskets ship in 1–3 business days.