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Biasi O-Ring Gasket 2.62mm x 22.22mm NBR BI1253105

Biasi

Biasi O-Ring Gasket 2.62mm x 22.22mm NBR BI1253105

NBR O-ring gasket, 2.62mm x 22.22mm, for Biasi gas boilers including Activ A and Riva Advance HE models.

At a glance

  • Also known as 262-X-2222-O-RING, 1651059
Manufacturer part no.
BI1253105
GC number
H38-961
Showing prices

£6.41

£5.34 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 Biasi BI1253105 is an NBR O-ring gasket measuring 2.62mm x 22.22mm. It is used as a sealing component in Biasi gas boilers, including the Activ A and Riva Advance HE ranges. The O-ring provides a fluid-tight seal at the joint where it is fitted.

Signs this part needs replacing

  • Water weeping or dripping from the joint where the O-ring sits
  • Visible flattening, cracking or perishing of the O-ring
  • Hardened or brittle rubber that no longer seals
  • Scale or debris trapped on the sealing face
  • Recurring pressure loss traced to the joint

Before you order

  • Confirm your boiler model and GC number against the fitment list
  • Check the existing O-ring dimensions (2.62mm x 22.22mm) match
  • Inspect the sealing surfaces for damage or corrosion before fitting
  • Check whether more than one O-ring is required for the repair

Not sure which part?

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