"The One" and Brew Pressure Gauge o-rings
Our "The One" is fitted with a specific o-ring to minimise the chance of leakage and the chance of the o-ring being pinched by the wand; and we also ship a slightly differently sized spare silicone o-ring with every "The One" purchased, so if you have managed to break your current o-ring then please look underneath the foam in The One box and you may find a spare that will fit.
Depending on how you bought your steam tip, the o-ring required may differ. So, if you bought:
- "The One" as a bundled product, with a Classic Pro steam wand then you will have a 5mm x 1.2mm red silicone o-ring fitted and a 4.5mm x 1.5mm supplied as a slightly thicker spare.
- "The One" as a stand-alone product then you will have a 4.5mm x 1.5mm red silicone o-ring fitted, and a 5mm x 1.2mm supplied as a slightly thinner spare.
- Smaller o-rings sized as 5mm x 1.0mm are also available and can be used in some historic cases if other sizes are a tight fit - though these haven't been used on production versions of The One since early 2021
(Please don't take the product image as any indication of product size or suitability as this is just a generic image of a red silicone o-ring).
The capillary tube within our brew pressure gauge kit uses a 5mm x 1.5mm red silicone o-ring.
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