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Glow-worm Flue Seal 0020020497

Glow-worm

Glow-worm Flue Seal 0020020497

Inside wall flue seal, DN 100, for Glow-worm gas boilers; replaces part code 2000802785.

At a glance

  • Part type: inside wall seal (internal wall seal)
  • Also known as 1337667
Manufacturer part no.
0020020497
Showing prices

£26.36

£21.97 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 Glow-worm 0020020497 is an inside wall seal (internal wall seal) with a DN 100 nominal diameter, used where the flue passes through the internal wall of the property. It seals the flue penetration against draughts, moisture and flue gas leakage into the wall cavity or room. It is listed as a replacement for part code 2000802785.

Signs this part needs replacing

  • Visible cracking, hardening or perishing of the seal material
  • Draughts or cold air tracking around the flue where it enters the internal wall
  • Damp patches, staining or water ingress on the wall around the flue penetration
  • The seal has slipped, compressed or is no longer seated correctly in the wall opening
  • Flue gas readings or spillage checks indicating leakage at the internal wall penetration

Before you order

  • Confirm the flue diameter is DN 100 before ordering
  • Check your appliance model against the fitment list above
  • Confirm whether an internal or external wall seal is required for your installation
  • Inspect the existing seal and flue penetration for damage before fitting

Not sure which part?

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