Nefit O-ring flow 3.53x28.97 mm DN 10 pcs old number: 73450S: original Nefit spare part, type: O-ring. Application: Boiler (EcomLine Classic HRC 22V). Manufacturer number: 7098982; Instalpunt article number: 8024500.
According to the Nefit parts lists, this part fits 12 models, including Nefit (Bosch) EcomLine Classic HRC 22V, Nefit (Bosch) EcomLine Classic HRC 30V and Nefit (Bosch) EcomLine Elite HRC 24 CW4. The full list is under “Fits”.
This item is in stock and usually arrives within 3–5 working days.
Check the rating plate of your appliance before ordering; if in doubt, ask the manufacturer or your installer. Work on gas-carrying parts must be carried out by a qualified gas engineer.




