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Baxi 5114776 Gasket - Duo Tec/Megaflo/Platinum Combi

Baxi

Baxi 5114776 Gasket - Duo Tec/Megaflo/Platinum Combi

Baxi 5114776 gasket for Baxi 124 and 128 ErP Combi and Platinum+ 40 Combi boilers, sealing a joint inside the appliance.

At a glance

  • Part type: Gasket
  • Also known as 1118152, N5109
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
5114776
Showing prices

£8.76

£7.30 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 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 Baxi 5114776 is a gasket manufactured by Baxi for use inside its domestic combi boiler range. It sits between two mating faces within the appliance and forms a seal that keeps water, condensate or flue products contained at that joint. Gaskets of this type are consumable items: they compress to seal on first assembly and are normally renewed whenever the joint is opened for repair or servicing.

Signs this part needs replacing

  • Water weeping, damp staining or crusting around the joint the gasket seals
  • The old gasket has hardened, flattened, cracked or deformed in service
  • Scale, corrosion or pitting visible on the mating faces once the joint is opened
  • The joint continues to weep after reassembly with the original gasket in place
  • Condensate or flue odour escaping near the sealed joint

Before you order

  • Confirm the appliance model and, where applicable, the serial number — the 124 and 128 ErP Combi listings specify serial numbers ending BC.
  • Compare the old gasket against the alternative numbers 1118152 and N5109 before ordering.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
  • Inspect the mating faces and renew any other seals disturbed during the repair.

Not sure which part?

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