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Potterton O-Ring 28.24mm x 2.62mm 5142349

Potterton

Potterton O-Ring 28.24mm x 2.62mm 5142349

28.24 mm x 2.62 mm O-ring, Potterton part 5142349, for Potterton Commercial Sirius 2 and Sirius 3 FS90 and FS110 boilers.

Manufacturer part no.
5142349
Showing prices

£2.40

£2.00 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 Potterton O-Ring 28.24mm x 2.62mm, part number 5142349, is a sealing ring used on Potterton Commercial Sirius 2 and Sirius 3 boilers. It seats at a joint within the appliance to keep that connection fluid-tight. It is a service item, so it is replaced whenever the joint it seals is disturbed or shows signs of weeping.

Signs this part needs replacing

  • Water weeping or a damp trace around the joint the O-ring seals
  • The ring has hardened, cracked or flattened when inspected
  • Scale or mineral deposits found on the sealing face
  • A joint that continues to seep after being tightened

Before you order

  • Check the appliance model against the fit list above; this ring is listed for Sirius 2 and Sirius 3 FS90 and FS110 units
  • Measure the ring removed from the appliance and compare it with 28.24 mm x 2.62 mm
  • Confirm the part number on the appliance's parts list is 5142349
  • Inspect the mating faces and seating groove for damage before fitting, as a marked surface will not seal with a new ring alone

Not sure which part?

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