Alpha
Alpha Seal Kit Flue/Air Connect 3.018999
Seal kit for the flue and air connection on Alpha CD series and Gassaver gas boilers, part number 3.018999.
At a glance
- Also known as 1257935
- Flue and combustion circuit work must be carried out by a Gas Safe registered engineer
£35.24
£29.37 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 Alpha 3.018999 seal kit is a service part for the flue and air connection on Alpha gas boilers. It seals the joint at the flue/air connection point on the appliance. It is listed for Alpha CD series and Gassaver models.
Signs this part needs replacing
- Seals at the flue/air connection showing cracking, hardening or flattening
- Staining or leakage around the flue/air connection
- Combustion readings drifting outside the expected range
- Condensate or water tracking at the flue connection
- Seals disturbed or damaged during servicing
Before you order
- Confirm your boiler model and GC number against the fitment list above
- Check the part number 3.018999 against the appliance or the manufacturer's parts list
- Inspect the flue and air connection seals for damage before ordering
- Flue and combustion circuit work must be carried out by a Gas Safe registered engineer
Compliance
| Alternative numbers | 1257935 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA ALPHA CD12S | — | — | — | |
| ALPHA ALPHA CD20S | — | — | — | |
| ALPHA ALPHA GASSAVER GS-1 | — | — | — | |
| ALPHA ALPHA PREMIERPACK | — | — | — | |
| ALPHA CD12S | 41-532-16 | 41-532-16 | — | — |
| ALPHA CD12S (LPG) | 41-532-17 | 41-532-17 | — | — |
| ALPHA CD20S | 41-532-18 | 41-532-18 | — | — |
| ALPHA CD20S (LPG) | 41-532-19 | 41-532-19 | — | — |
| ALPHA CD25X | 47-532-39 | 47-532-39 | — | — |
| ALPHA CD25X (LPG) | 47-532-40 | 47-532-40 | — | — |
Showing 10 of 14 compatible appliances.
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.
ALPHA appliance manual — CD12S (GC 41-532-16), CD12S (LPG) (GC 41-532-17), CD20S (GC 41-532-18), CD20S (LPG) (GC 41-532-19), CD28S (GC 41-532-20), CD28S (LPG) (GC 41-532-21)
manualmanualALPHA appliance manual — CD25X (GC 47-532-39), CD25X (LPG) (GC 47-532-40), CD28X (GC 47-532-37), CD28X (LPG) (GC 47-532-38)
manualNo technical questions yet for this part.
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