Baxi
Baxi O-Ring 19.8mm x 3.6mm 7769780
Baxi O-ring, 19.8mm x 3.6mm, part number 7769780, for sealing joints on Baxi combi and system boilers.
At a glance
- Also known as 1134974
£5.83
£4.86 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Baxi 7769780 is an O-ring measuring 19.8mm x 3.6mm, used as a sealing component on Baxi combi and system boilers. It seats into a joint or housing to prevent water escaping under system pressure. It is a small consumable part, typically replaced during servicing or when a joint begins to weep.
Signs this part needs replacing
- Water weeping or dripping from the joint the O-ring seals
- Visible flattening, cracking or perishing of the ring
- Scale or debris build-up on the sealing face
- Unexplained loss of system pressure
- Slight seepage traced to the joint after the boiler has been running
Before you order
- Confirm the part number 7769780 against the manufacturer's parts list for your appliance
- Check the O-ring dimensions against the one being removed
- Verify your boiler model against the fitment list above
- Inspect the joint faces for damage before refitting
Compliance
| Alternative numbers | 1134974 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI 424 ERP COMBI 2.1 | 47-077-74 | 47-077-74 | — | — |
| BAXI 430 ERP COMBI 2.1 | 47-077-75 | 47-077-75 | — | — |
| BAXI 436 ERP COMBI 2.1 | 47-077-76 | 47-077-76 | — | — |
| BAXI 615 SYSTEM 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 41-884-01 | 41-884-01 | — | — |
| BAXI 615 SYSTEM 2 - INTERNAL FIT PRESSURE GAUGE | 41-884-01 | 41-884-01 | — | — |
| BAXI 618 SYSTEM 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 41-884-02 | 41-884-02 | — | — |
| BAXI 618 SYSTEM 2 - INTERNAL FIT PRESSURE GAUGE | 41-884-02 | 41-884-02 | — | — |
| BAXI 624 COMBI 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 47-077-55 | 47-077-55 | — | — |
| BAXI 624 COMBI 2 - INTERNAL FIT PRESSURE GAUGE | 47-077-55 | 47-077-55 | — | — |
| BAXI 624 SYSTEM 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 41-884-03 | 41-884-03 | — | — |
Showing 10 of 39 compatible appliances.
Documents & drawings
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