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Vaillant Packing Ring 180904

Vaillant

Vaillant Packing Ring 180904

Vaillant packing ring, part number 180904, for VU 656-7, VU 656/4-5, Ecomax 665 and Ecotec VU 656/4-5 gas boilers.

At a glance

  • Also known as 1376580
Manufacturer part no.
180904
Showing prices

£12.79

£10.66 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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 Vaillant 180904 is a packing ring — a sealing gasket used on Vaillant gas boilers. It seals the joint it is fitted to, preventing water or gas from escaping past the mating faces. It is listed under O-rings, washers and gaskets in the gas boiler spares range.

Signs this part needs replacing

  • Visible weeping or damp staining around the joint the ring seals
  • Water tracking or dripping from the sealed connection
  • The ring feels hard, brittle or flattened compared with a new one
  • Cracking, splitting or deformation visible on the ring
  • Loss of system pressure or repeated topping up with no other obvious cause

Before you order

  • Confirm your boiler model against the fitment list above before ordering
  • Check the part number on the existing component or the manufacturer's parts list for your appliance
  • Identify the joint the ring seals so the correct item is replaced
  • Inspect the mating faces for corrosion or damage that could prevent a clean seal

Not sure which part?

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