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Glow-worm Flue Hood Front Seal 0020020721

Glow-worm

Glow-worm Flue Hood Front Seal 0020020721

Flue hood front seal for Glow-worm Flexicom and Ultimate gas boilers, part number 0020020721.

At a glance

  • Also known as 1337763
Manufacturer part no.
0020020721
Showing prices

£14.89

£12.41 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 0020020721 is a front seal for the flue hood on Flexicom and Ultimate series gas boilers. It sits at the front of the flue hood assembly, sealing the joint to contain flue gases within the appliance. It is a serviceable gasket-type component supplied under the Glow-worm part number 0020020721.

Signs this part needs replacing

  • Visible cracking, hardening or flattening of the seal material
  • Soot or staining around the flue hood front joint
  • Signs of flue gas leakage at the hood face
  • Seal deformed or torn during servicing or inspection
  • Condensate or water tracking past the seal face

Before you order

  • Confirm your boiler model and GC number against the fitment list
  • Check the part number on the existing seal where it is legible
  • Confirm how many seals your appliance requires
  • Refer to the manufacturer's parts list if your model is not listed

Not sure which part?

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