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Biasi O-Ring Gasket BI1872111

Biasi

Biasi O-Ring Gasket BI1872111

Biasi BI1872111 O-ring gasket measuring 3.53mm x 12.29mm, used to seal joints on Basica COND and Rinnova Adaptive boilers.

At a glance

  • Also known as 1651908
Manufacturer part no.
BI1872111
Showing prices

£1.57

£1.31 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 BI1872111 is an O-ring gasket with a cross-section of 3.53mm and an internal diameter of 12.29mm. It is fitted to Biasi Basica COND and Rinnova Adaptive boiler families to seal a joint against water or gas leakage. The ring is compressed between two mating faces to form a fluid-tight seal.

Signs this part needs replacing

  • Water weeping or a visible drip at the joint the ring seals
  • Damp staining or corrosion around the mating faces
  • The ring feels hard, brittle or has lost its elasticity
  • Flattening, cracking or a visible split in the rubber
  • Scale or debris trapped on the sealing face causing a poor seal

Before you order

  • Confirm your boiler model against the fitment list above
  • Check the existing O-ring dimensions match 3.53mm x 12.29mm
  • Inspect the mating faces for damage before fitting a new ring
  • Check how many rings the joint requires before ordering

Not sure which part?

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