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Vaillant O-Ring 0020143459

Vaillant

Vaillant O-Ring 0020143459

Vaillant O-ring, part 0020143459, for ecoTEC VU 806/5-5 R2, R3 and R4 boilers.

At a glance

  • Appliance family: ecoTEC VU 806/5-5
  • Also known as 1385894
Manufacturer part no.
0020143459
Showing prices

£24.92

£20.77 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

This is a Vaillant O-ring, supplied under part number 0020143459. It is a sealing component used on ecoTEC VU 806/5-5 R2, R3 and R4 boilers, where it seals a joint against water or gas escape. O-rings of this type are fitted at specific connection points on the appliance and are replaced whenever the joint is disturbed or the seal has degraded.

Signs this part needs replacing

  • Visible water weeping or a damp stain around the joint the O-ring seals
  • The O-ring is cracked, split or has hardened and lost its flexibility
  • The seal is flattened or deformed and no longer sits proud of its groove
  • A slight gas smell or a failed tightness test at a joint disturbed during service
  • The O-ring was removed to access another component and cannot be reused

Before you order

  • Confirm your appliance model against the fit list above, as this O-ring is listed for ecoTEC VU 806/5-5 R2, R3 and R4 variants only
  • Check the gas council number on the appliance data badge against 41-044-68
  • Identify the exact joint the O-ring is required for, as more than one seal may be used on the appliance
  • Confirm how many seals the job requires before ordering

Not sure which part?

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