Biasi
Biasi O-Ring Gasket BI1351113
Biasi O-ring gasket, 1.90 mm x 8.90 mm, for compatible Biasi gas boiler models.
At a glance
- Also known as O-RING-190-X-890, 1651121
Showing prices
£1.43
£1.19 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 BI1351113 is an O-ring gasket measuring 1.90 mm x 8.90 mm. It is a Biasi component intended for use in compatible Biasi gas boilers. The O-ring provides a seal within the appliance assembly.
Signs this part needs replacing
- Weeping or dripping around the joint sealed by the O-ring.
- Visible flattening, hardening or cracking of the O-ring.
- Mineral deposits or corrosion around the sealing face.
- Loss of seal after maintenance or component removal.
- Intermittent leaks that worsen with temperature changes.
Before you order
- Confirm your boiler model and GC number against the fitment list.
- Check the existing O-ring dimensions are 1.90 mm x 8.90 mm.
- Verify the manufacturer part number BI1351113.
- Inspect the sealing surfaces for damage before fitting.
Compliance
| GC number | H74-540 |
|---|---|
| Barcode / EAN | 8023585843550 |
| Alternative numbers | O-RING-190-X-890, 1651121 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BIASI ACTIV A 18S | — | — | — | |
| BIASI ACTIV A 18S | 41-583-11 | 41-583-11 | — | — |
| BIASI ACTIV A 18S LPG | 41-583-11 | 41-583-11 | — | — |
| BIASI ACTIV A 25C | 47-583-21 | 47-583-21 | — | — |
| BIASI ACTIV A 25C | — | — | — | |
| BIASI ACTIV A 25C LPG | 47-583-21 | 47-583-21 | — | — |
| BIASI ACTIV A 25S | 41-583-12 | 41-583-12 | — | — |
| BIASI ACTIV A 25S | — | — | — | |
| BIASI ACTIV A 25S LPG | 41-583-12 | 41-583-12 | — | — |
| BIASI ACTIV A 30C | 47-583-22 | 47-583-22 | — | — |
Showing 10 of 139 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 — ACTIV A 18S (GC 41-583-11), ACTIV A 18S LPG (GC 41-583-11), ACTIV A 25S (GC 41-583-12), ACTIV A 25S LPG (GC 41-583-12), ACTIV A 30S (GC 41-583-13), ACTIV A 30S LPG (GC 41-583-13)
manualmanualBIASI appliance manual — ACTIV A 25C (GC 47-583-21), ACTIV A 25C LPG (GC 47-583-21), ACTIV A 30C (GC 47-583-22), ACTIV A 30C LPG (GC 47-583-22), ACTIV A 35C (GC 47-583-23), ACTIV A 35C LPG (GC 47-583-23)
manualmanualBIASI appliance manual — ACTIV A PLUS 16S (GC 41-583-20), ACTIV A PLUS 16S LPG (GC 41-583-20), ACTIV A PLUS 25S (GC 41-583-21), ACTIV A PLUS 25S LPG (GC 41-583-21)
manualmanualBIASI appliance manual — ACTIV A PLUS 25C (GC 47-583-28), ACTIV A PLUS 25C LPG (GC 47-583-28), ACTIV A PLUS 30C (GC 47-583-26), ACTIV A PLUS 30C LPG (GC 47-583-26), ACTIV A PLUS 35C (GC 47-583-27), ACTIV A PLUS 35C LPG (GC 47-583-27)
manualmanualBIASI appliance manual — ADVANCE 25C (GC 47-583-43), ADVANCE 25C LPG (GC 47-583-43), ADVANCE 30C (GC 47-583-44), ADVANCE 30C LPG (GC 47-583-44), ADVANCE 35C (GC 47-583-45), ADVANCE 35C LPG (GC 47-583-45)
manualmanualBIASI appliance manual — ADVANCE 25S (GC 41-583-33), ADVANCE 25S LPG (GC 41-583-33), ADVANCE 30S (GC 41-583-34), ADVANCE 30S LPG (GC 41-583-34)
manualmanualBIASI appliance manual — ADVANCE PLUS 16S (GC 41-583-22), ADVANCE PLUS 16S LPG (GC 41-583-22), ADVANCE PLUS 25S (GC 41-583-23), ADVANCE PLUS 25S LPG (GC 41-583-23), ADVANCE PLUS 30S (GC 41-583-24), ADVANCE PLUS 30S LPG (GC 41-583-24)
manualmanualBIASI appliance manual — ADVANCE PLUS 16S ERP (GC 41-583-27), ADVANCE PLUS 16S ERP LPG (GC 41-583-27), ADVANCE PLUS 25S ERP (GC 41-583-28), ADVANCE PLUS 25S ERP LPG (GC 41-583-28), ADVANCE PLUS 30S ERP (GC 41-583-29), ADVANCE PLUS 30S ERP LPG (GC 41-583-29)
manualmanualBIASI appliance manual — ADVANCE PLUS 25C (GC 47-583-29), ADVANCE PLUS 25C LPG (GC 47-583-29), ADVANCE PLUS 30C (GC 47-583-30), ADVANCE PLUS 30C LPG (GC 47-583-30), ADVANCE PLUS 35C (GC 47-583-31), ADVANCE PLUS 35C LPG (GC 47-583-31)
manualmanualBIASI appliance manual — ADVANCE PLUS 25C ERP (GC 47-583-35), ADVANCE PLUS 25C ERP LPG (GC 47-583-35), ADVANCE PLUS 30C ERP (GC 47-583-36), ADVANCE PLUS 30C ERP LPG (GC 47-583-36), ADVANCE PLUS 35C ERP (GC 47-583-37), ADVANCE PLUS 35C ERP LPG (GC 47-583-37)
manualmanualBIASI appliance manual — BASICA COND M275V.2024 SM (GC 47-583-49), BASICA COND M275V.2428 SM (GC 47-583-50), BASICA COND M275V.2832 SM (GC 47-583-51)
manualmanualBIASI appliance manual — GARDA HE MK2 M96A.24SM/B (GC 47-583-15), GARDA HE MK2 M96A.28SM/B (GC 47-583-16)
manualmanualBIASI appliance manual — INOVIA 16S (GC 41-583-25), INOVIA 16S LPG (GC 41-583-25), INOVIA 25S (GC 41-583-26), INOVIA 25S LPG (GC 41-583-26)
manualmanualBIASI appliance manual — INOVIA 25C (GC 47-583-32), INOVIA 25C LPG (GC 47-583-32), INOVIA 30C (GC 47-583-33), INOVIA 30C LPG (GC 47-583-33), INOVIA 35C (GC 47-583-34), INOVIA 35C LPG (GC 47-583-34)
manualmanualBIASI appliance manual — INOVIA 25C ERP (GC 47-583-38), INOVIA 25C ERP LPG (GC 47-583-38), INOVIA 30C ERP (GC 47-583-39), INOVIA 30C ERP LPG (GC 47-583-39), INOVIA 35C ERP (GC 47-583-40), INOVIA 35C ERP LPG (GC 47-583-40)
manualmanualBIASI appliance manual — INOVIA 25S ERP (GC 41-583-30), INOVIA 25S ERP LPG (GC 41-583-30)
manualmanualBIASI appliance manual — RINNOVA ADAPTIVE M300V.2025 SM (GC 47-583-46), RINNOVA ADAPTIVE M300V.2530 SM (GC 47-583-47), RINNOVA ADAPTIVE M300V.3035 SM (GC 47-583-48)
manualmanualBIASI appliance manual — RIVA ADVANCE HE M110B.24SM/C (GC 47-583-11), RIVA ADVANCE HE M110B.32SM/C (GC 47-583-12)
manualmanualBIASI appliance manual — RIVA ADVANCE HE M110B.24SR/C (GC 41-583-07)
manualmanualBIASI appliance manual — RIVA COMPACT HE M96A.24SM/C (GC 47-583-17), RIVA COMPACT HE M96A.28SM/C (GC 47-583-18), RIVA COMPACT HE M96A.32SM/C (GC 47-583-19)
manualmanualBIASI appliance manual — RIVA COMPACT HE M96A.24SR/C (GC 41-583-09), RIVA COMPACT HE M96A.28SR/C (GC 41-583-10)
manualmanualBIASI appliance manual — RIVA PLUS HE 24C ERP (GC 47-583-41), RIVA PLUS HE 24C ERP LPG (GC 47-583-41), RIVA PLUS HE 28C ERP (GC 47-583-42), RIVA PLUS HE 28C ERP LPG (GC 47-583-42)
manualmanualBIASI appliance manual — RIVA PLUS HE 24S ERP (GC 41-583-31), RIVA PLUS HE 24S ERP LPG (GC 41-583-31), RIVA PLUS HE 28S ERP (GC 41-583-32), RIVA PLUS HE 28S ERP LPG (GC 41-583-32)
manualmanualBIASI appliance manual — RIVA PLUS HE M296.24SM/C (GC 47-583-24), RIVA PLUS HE M296.24SM/C LPG (GC 47-583-24), RIVA PLUS HE M296.28SM/C (GC 47-583-25), RIVA PLUS HE M296.28SM/C LPG (GC 47-583-25)
manualmanualBIASI appliance manual — RIVA PLUS HE M296.24SR/C (GC 41-583-18), RIVA PLUS HE M296.24SR/C LPG (GC 41-583-18), RIVA PLUS HE M296.28SR/C (GC 41-583-19), RIVA PLUS HE M296.28SR/C LPG (GC 41-583-19)
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