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Vaillant O-Ring 193539

Vaillant

Vaillant O-Ring 193539

Vaillant O-ring, part number 193539, supplied as a pack of ten for ecoTEC PLUS boilers.

At a glance

  • Appliance family: ecoTEC PLUS
  • Also known as 1376844
Manufacturer part no.
193539
Showing prices

£24.04

£20.03 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 193539 is an O-ring supplied in a pack of ten. It is a sealing component used on Vaillant ecoTEC PLUS gas boilers, where it seals a joint against water or gas leakage. The O-ring is a consumable part and is typically renewed when a joint is disturbed during service or repair.

Signs this part needs replacing

  • Visible water weeping or dripping from the joint the O-ring seals
  • The O-ring is hardened, brittle or cracked when inspected
  • The O-ring has flattened or taken a permanent set and no longer sits proud of its groove
  • Water staining, scale or corrosion around the joint face
  • A joint that continues to seep after the fitting has been re-tightened

Before you order

  • Confirm your boiler model against the fitment list above, as the same O-ring is used across a large number of ecoTEC PLUS variants
  • Check the manufacturer's parts list for your appliance to confirm that part number 193539 is the correct seal for the joint you are working on
  • Confirm how many O-rings the job requires, as the pack contains ten
  • Inspect the joint faces and groove for damage before fitting, as a worn groove will not seal correctly with a new O-ring

Not sure which part?

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