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Halstead O-Ring 10.78mm x 2.62mm 352573

Halstead

Halstead O-Ring 10.78mm x 2.62mm 352573

Halstead O-ring measuring 10.78mm x 2.62mm, to BS111, for use in ACE, Finest and Wickes gas boiler models.

At a glance

  • Also known as 1291478
Manufacturer part no.
352573
GC number
E23-644
Showing prices

£1.44

£1.20 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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

A Halstead O-ring with a 10.78mm inner dimension and 2.62mm cross-section, manufactured to the BS111 size reference. It is a sealing component used within the hydraulic and water-carrying assemblies of Halstead gas boilers. The O-ring provides a compression seal at the joint where it is fitted, preventing water from escaping under system pressure.

Signs this part needs replacing

  • Visible water weeping or a damp trace around the joint where the O-ring sits
  • The O-ring has hardened, flattened or lost its elasticity
  • Cracks, splits or a nibbled edge on the ring surface
  • Scale or debris build-up on the ring preventing a clean seal
  • Recurring pressure loss traced to a joint sealed by this O-ring

Before you order

  • Confirm your boiler model and serial number against the fitment list above
  • Check the existing O-ring dimensions and BS111 reference match this part
  • Inspect the mating surfaces and joint for damage before refitting
  • Consider whether any other seals on the same assembly also need renewing

Not sure which part?

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