Biasi
Biasi O-Ring Gasket BI1001128
Biasi BI1001128 O-ring gasket measuring 1.78mm x 20.35mm, suitable for a range of Biasi gas boilers.
At a glance
- Also known as O-RING-178-X-2035, 1650024, N2260
Showing prices
£0.89
£0.74 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 BI1001128 is an O-ring gasket measuring 1.78mm x 20.35mm, used in Biasi gas boilers. It forms a seal at the joint where it is fitted, preventing water or gas from escaping.
Signs this part needs replacing
- Visible cracking, flattening or hardening of the O-ring
- Water or gas weeping from the joint
- Damp staining or corrosion around the sealed connection
- Loss of system pressure
- O-ring swollen or deformed after exposure to heat or system chemicals
Before you order
- Confirm the O-ring dimensions (1.78mm x 20.35mm) match the component being replaced
- Check the boiler model and GC number against the fitment list above
- Inspect the mating surfaces for corrosion, pitting or damage before fitting
- Verify the part number BI1001128 against the appliance's parts list
Compliance
| GC number | E00-675 |
|---|---|
| Barcode / EAN | 8023585801192 |
| Alternative numbers | O-RING-178-X-2035, 1650024, N2260 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BIASI 24S | 47-970-10 | 47-970-10 | — | — |
| BIASI 24SR | 41-970-05 | 41-970-05 | — | — |
| BIASI 28S | 47-970-11 | 47-970-11 | — | — |
| BIASI BIASI 24S | — | — | — | |
| BIASI BIASI 24SR | — | — | — | |
| BIASI BIASI 28S | — | — | — | |
| BIASI BIASI SAVIO GAIA 424S | — | — | — | |
| BIASI GAIA 424RS | 41-970-04 | 41-970-04 | — | — |
| BIASI GAIA 424S | 47-970-08 | 47-970-08 | — | — |
| BIASI GAIA 428S | 47-970-09 | 47-970-09 | — | — |
Showing 10 of 19 compatible appliances.
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
manual
BIASI appliance manual — 24S (GC 47-970-10), 24SR (GC 41-970-05), 28S (GC 47-970-11)
manualmanualBIASI appliance manual — GAIA 424RS (GC 41-970-04), GAIA 424S (GC 47-970-08), GAIA 428S (GC 47-970-09)
manualmanualBIASI appliance manual — PRISMA 24SE (GC 47-970-04), PRISMA 24SER (GC 41-970-02), PRISMA 28SE (GC 47-970-05)
manualNo technical questions yet for this part.
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