Nefit lip seal siphon DN18 5 pcs old number: 73841S for TopLine and EcomLine: original Nefit spare part, type: Lip seal, Siphon. Application: Boiler (Condens 7000F (GC7000F 100 23 (R))). Manufacturer number: 7100819; Instalpunt article number: 8028804.
According to the Nefit parts lists, this part fits 24 models, including Bosch Condens 7000F (GC7000F 75 23 (R)), Bosch Condens 7000F (GC7000F 100 23 (R)) 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.


