9Barista MK.2 Boiler O-ring Seal

Replacement boiler O-ring seal for the 9Barista Mk.2 espresso machine. Made from durable silicone rubber, it ensures a tight, reliable seal between the boiler components.

Under normal use, the seal lasts for many years. However, overheating or damage during cleaning may require replacement to maintain safe and efficient operation.

This official Mk.2 spare part provides a pressure-tight fit to support proper boiler function and prevent leaks.

Suitable for maintenance or as a spare. Replacement requires basic tools and familiarity with the machine.

One spare O-ring is included with every new 9Barista Mk.2 espresso maker.