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Biasi KI1004113 O-ring 26.58 x 3.53mm

Biasi

Biasi KI1004113 O-ring 26.58 x 3.53mm

Genuine Biasi KI1004113 O-ring seal, 26.58mm x 3.53mm, for Biasi boiler assemblies.

At a glance

  • Also known as O-RING-2658-X-353, 1650528
  • Gas Safe registered engineer required if the joint is on a gas connection
Manufacturer part no.
KI1004113
Showing prices

£3.58

£2.98 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 KI1004113 is a genuine O-ring seal measuring 26.58mm x 3.53mm, used within Biasi boiler assemblies to seal joints against water or gas leaks.

Signs this part needs replacing

  • Water weeping or dripping from the joint the O-ring seals
  • Visible perishing, cracking or flattening of the old ring
  • Loss of system pressure traced back to the joint
  • Corrosion or limescale build-up around the fitting

Before you order

  • Match the dimensions and part number against your existing O-ring before fitting
  • Isolate the water supply and drain the section before replacing
  • Gas Safe registered engineer required if the joint is on a gas connection

Not sure which part?

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