Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Viessmann Gasket (Ioniz. Electrode) 7827031

Viessmann

Viessmann Gasket (Ioniz. Electrode) 7827031

Viessmann 7827031 gasket for the ionisation electrode on Vitodens 200-W and Vitocrossal 300 boilers.

At a glance

  • Also known as 2320864
Manufacturer part no.
7827031
Showing prices

£15.17

£12.64 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Viessmann 7827031 is a gasket that seals the ionisation electrode where it mounts into the combustion chamber on Viessmann gas boilers. It forms a gas-tight and water-tight joint at the electrode seat on Vitodens 200-W and Vitocrossal 300 models. The gasket is a service item and is typically renewed whenever the ionisation electrode is removed or replaced.

Signs this part needs replacing

  • Weeping or moisture tracks around the base of the ionisation electrode
  • The gasket has hardened, flattened or cracked and no longer seals cleanly
  • Scale, soot or corrosion deposits sitting on or under the gasket face
  • Water or condensate pooling near the electrode mounting after the boiler has run
  • Repeated flame-sensing or ignition faults following refitting of the ionisation electrode

Before you order

  • Confirm the boiler model and serial number from the appliance data plate against the fits list, as fitment is serial-number specific
  • Check whether the ionisation electrode itself also needs renewing at the same time
  • Inspect the electrode mounting face and clean it before fitting the new gasket
  • Verify the part number 7827031 against the existing component or parts list

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.