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Vaillant Seal Kit 0020143522

Vaillant

Vaillant Seal Kit 0020143522

Vaillant 0020143522 seal kit for ecoTEC VU 806, 1006 and 1206 gas boilers.

At a glance

  • Also known as 1385976
Manufacturer part no.
0020143522
Showing prices

£82.12

£68.43 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 Vaillant 0020143522 is a seal kit supplied by Vaillant for its ecoTEC VU range of gas boilers. It falls under the O-rings, washers and gaskets category of boiler spares and is used to reseal joints and connections during servicing or repair work. It is listed for the VU 806, VU 1006 and VU 1206 models across the R2, R3 and R4 build variants.

Signs this part needs replacing

  • Visible weeping or damp staining around a joint or connection after the boiler has run
  • Perished, flattened or hardened seals found during a service or strip-down
  • Water or condensate tracking onto surrounding components from a failed joint
  • A joint that will not seal correctly after being disturbed for repair work
  • Seals that have been reused once too often and no longer sit proud of their groove

Before you order

  • Confirm the boiler model and build variant against the fitment list above
  • Check the appliance data badge for the exact model reference and GC number
  • Identify which joint or connection requires resealing before ordering
  • Confirm whether the existing seals have been disturbed or reused previously

Not sure which part?

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