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Potterton Gasket 5142340

Potterton

Potterton Gasket 5142340

Gasket measuring 224mm x 3mm for Potterton Commercial Sirius 2 and Sirius 3 FS50 and FS70 boilers.

Manufacturer part no.
5142340
Showing prices

£16.80

£14.00 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 GASKET - 224MM X 3MM is a sealing gasket supplied by Potterton for its Commercial boiler range. It is sized at 224mm x 3mm and is used to maintain a gas-tight or water-tight joint on the appliance where it is fitted.

Signs this part needs replacing

  • Visible cracking, hardening or flattening of the gasket material
  • Traces of water or flue gas staining around the joint face
  • The gasket breaks up or delaminates when the joint is disturbed
  • Persistent leaks at the joint after the fastenings have been correctly tightened
  • Burning or discolouration marks on or around the gasket seating area

Before you order

  • Confirm the boiler model and variant against the fitment list, as the gasket suits specific Sirius 2 and Sirius 3 FS50 and FS70 units
  • Check the existing gasket dimensions against the 224mm x 3mm size quoted
  • Verify the part number 5142340 matches the number on the component being replaced
  • Inspect the mating faces for corrosion or pitting before fitting, as a damaged face will not seal even with a new gasket

Not sure which part?

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