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Biasi O-Ring KI1042109

Biasi

Biasi O-Ring KI1042109

Biasi O-ring, 5.28 mm internal diameter by 1.78 mm section, for RIVA Compact HE boilers.

At a glance

  • Also known as 1650611
Manufacturer part no.
KI1042109
GC number
169-013
Showing prices

£0.68

£0.57 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 KI1042109 is a small rubber O-ring with a 5.28 mm diameter and a 1.78 mm cross-section. It is used as a sealing component within Biasi RIVA Compact HE gas boilers, seating into a joint or port to prevent water or gas escape. It is a service part intended for replacement during maintenance or repair work.

Signs this part needs replacing

  • Visible water weeping or a damp trace around the joint the O-ring seals
  • The O-ring has hardened, flattened or lost its elasticity
  • Cracking, splitting or a nibbled edge on the ring
  • Scale or corrosion debris sitting in the seal groove
  • A joint that continues to seep after the fitting has been tightened

Before you order

  • Confirm your boiler model against the fit list above
  • Check the existing O-ring dimensions before ordering, as more than one size is used across the range
  • Inspect the seal groove and mating face for damage or debris before fitting
  • Consider whether any other seals on the same joint need replacing at the same time

Not sure which part?

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