Breville consumables map

54mm Barista-series vs 58mm Dual Boiler/Oracle — the diameter split is the whole game.

54mm path (Express / Pro / Touch)

Water filter: BWF100
Group seal: SP0025526 (legacy SP0001474)
Cleaning tablets: SP0010238
Descale powder: descale path (not tablets)
Hubs: BES870 · BES878 · BES880

58mm path

Group seal: SP0001635. Do not buy 54mm seals for Dual Boiler / Oracle.

Hard stop

Cleaning tablets ≠ descaler. Using the wrong chemistry in the wrong cycle is a common failure mode.