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Biasi O-Ring Gasket BI1181108

Biasi

Biasi O-Ring Gasket BI1181108

Biasi BI1181108 O-ring gasket for Garda, Parva HE, RIVA Advance HE and RIVA Compact HE gas boilers.

At a glance

  • Part type: O-ring gasket
  • Also known as O-RING-178-X-1242, 1650807
Manufacturer part no.
BI1181108
GC number
H50-483
Showing prices

£2.74

£2.28 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 BI1181108 is an O-ring gasket used on Biasi gas boilers, sealing a joint to prevent water loss and air ingress. It is listed under O-rings, washers and gaskets in the gas boiler spares range. The part is used across the Garda, Parva HE, RIVA Advance HE and RIVA Compact HE appliance families.

Signs this part needs replacing

  • Water weeping or dripping from the joint the O-ring seals
  • Visible cracking, hardening or flattening of the ring
  • Scale, corrosion or residue built up around the seal
  • Damp staining or water marks beneath the joint
  • Repeated pressure loss traced back to the sealed connection

Before you order

  • Confirm your boiler model against the fit list above
  • Check the GC number on the appliance data badge
  • Compare the old O-ring against the part number before fitting
  • Check whether more than one O-ring is needed for the job

Not sure which part?

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