Rocket Espresso Copper Gasket M479904826 – ½-Inch Seal Washer

Stop tiny leaks before they become big headaches with this original Rocket Espresso copper gasket, part M479904826. Precision-machined from annealed copper, the ½-inch crush washer conforms perfectly to mating surfaces as you tighten, ensuring a gas-tight, steam-tight seal that stands up to the extreme temperature swings inside your espresso machine. Because copper work-hardens as it compresses, it resists vibration loosening and lasts longer than fibre or PTFE alternatives. Keep a few on hand for routine boiler- or pump-line maintenance and enjoy rock-steady pressure, spotless internals and pristine espresso flavour.

Key Features & Benefits

• Annealed copper construction — high thermal conductivity and corrosion resistance
• Crush-form sealing — fills microscopic imperfections for drip-free connections
• ½-inch inside diameter — OEM fit on Rocket brew and steam lines
• Reusable for multiple torque cycles — re-anneal if needed during service
• Tiny part, big protection — preserves pump pressure and prevents scale creep at joints

Compatibility

• R 8 (201711-), R 8V (201711-)
• RE A 2014, RE A 2016, RE-A (201912- / 202207-)
• RE S (201802-)
• RE Timer (201806- / 202207-)

Swap in a fresh copper gasket at every disassembly and keep your Rocket Espresso machine running clean, quiet and leak-free.