Restore the integrity and leak-free performance of your espresso machine's steam valve with the genuine Viton Steam Valve Shaft O-Ring (Part # H.1.005). This essential sealing component is manufactured from high-quality Viton rubber, renowned for its superior resistance to high temperatures, pressurized steam, and chemical degradation compared to standard rubber seals. Viton's robust material properties ensure a lasting seal on the steam valve shaft, which is a critical point of failure in commercial espresso machines. Key features include precise OEM dimensions for a perfect fit and material designed to maintain elasticity and sealing force under constant thermal cycling. Is your espresso machine **leaking steam from the steam wand shaft** or **is the steam wand stiff to operate**? A worn-out o-ring is the likely culprit, leading to pressure loss, wasted energy, and potential safety hazards. Replacing the old seal with the OEM H.1.005 Viton O-Ring offers immediate benefits: it stops frustrating steam leaks, ensures consistent steam pressure for perfect milk texturing, and restores smooth, easy movement of the steam valve handle. This small but crucial part prevents major issues, such as **why is my espresso machine losing steam pressure?** or **how to stop steam leaks on La Marzocco steam valve?**. The O-Ring, Viton, Steam Valve Shaft (H.1.005) is ideal for preventative maintenance or immediate repair. Its usage involves seating the ring directly onto the steam valve shaft according to your machine's service diagram. As an official replacement component, it guarantees compatibility and peak performance across various La Marzocco espresso machine models. Trust the high-grade Viton seal to extend the lifespan of your machine's steam assembly and ensure your workflow remains uninterrupted, solving the common problem of **inconsistent steam output on my commercial espresso machine**.