First took apart the red cap which is used to seal the water container. The cap itself contained a, seal/plunger, tension spring and plastic screw. This mechanism seals the reservoir to be water tight but as soon as the container is placed on the base the mechanism allows the seal to break and release water slowly to the heating element.

Total Height: 34mm

Diameter: 38mm

Screw head diameter: 5.5mm (*now missing)

Screw height: 35mm (*now missing)

Rubber seal diameter: 19mm (*now missing)

Tension spring height: 24mm

Tension spring diameter: 4mm