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Potterton O-Ring Gasket 5142363

Potterton

Potterton O-Ring Gasket 5142363

Potterton 5142363 O-ring gasket measuring 17.86mm x 2.62mm, for Potterton Commercial Sirius 2 and Sirius 3 FS50 and FS70 boilers.

Manufacturer part no.
5142363
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 5142363 is an O-ring gasket measuring 17.86mm x 2.62mm, listed for use in Potterton Commercial boiler appliances. It forms a fluid-tight seal at the joint where it is fitted, preventing leakage from the assembly. It is specified for the Sirius 2 and Sirius 3 FS50 and FS70 models.

Signs this part needs replacing

  • Water weeping or dripping from the joint the O-ring seals
  • Visible flattening, cracking or perishing of the ring
  • Hardened or brittle rubber that no longer seals correctly
  • Scale or corrosion deposits around the sealing face

Before you order

  • Confirm the existing O-ring measures 17.86mm x 2.62mm before ordering
  • Check the appliance model against the Sirius 2 or Sirius 3 FS50 and FS70 listings
  • Inspect the sealing face for damage, debris or corrosion before fitting
  • Confirm part number 5142363 matches the requirement

Not sure which part?

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