Worcester Bosch
Worcester Bosch Flue Gas Duct Seal 87110042780
Worcester Bosch flue gas duct seal, part 87110042780, for Greenstar combi and condensing boilers, giving an airtight joint that prevents flue gas leaks.
At a glance
- Part type: Gaskets, seals and washers
- Appliance family: Greenstar
- Also known as 1012639
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Showing prices
£14.26
£11.88 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 Worcester Bosch 87110042780 is a flue gas duct seal used in the flue gas path of Greenstar combi and condensing boilers. It sits in the middle of the flue gas duct run and forms a tight, airtight joint between the duct sections. A sound seal here keeps flue gases inside the duct and out of the appliance casing and the room, so combustion and appliance performance stay dependable.
Signs this part needs replacing
- Flue gas smell around the appliance or at the flue duct joints
- Visible hardening, cracking, flattening or distortion of the seal
- Combustion readings drifting outside the expected range on a flue gas analyser
- Seal displaced, pinched or missing after service or flue work
- Soot staining or condensate tracking at the duct joint
Before you order
- Check the appliance GC number and serial plate against the compatibility list to confirm the seal is correct for your model.
- Cross-check the part number 87110042780 and the alternative number 1012639 before ordering.
- If other seals or gaskets are being disturbed during the same repair, check whether a seal kit is the better option.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Gaskets, Seals & Washers |
|---|---|
| Appliance family | Greenstar |
| Length | 0.1mm |
| Width | 0.1mm |
| Depth | 0.1mm |
Compliance
| Manufacturer part number (MPN) | 87110042780 |
|---|---|
| GC number | E74-521 |
| Barcode / EAN | 4010009586814 |
| Commodity code | 8403 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1012639 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER BRITISH GAS GREENSTAR CC1-FSN-GB NG 29KW COMBI | 47-108-05 | 47-108-05 | — | — |
| WORCESTER BRITISH GAS GREENSTAR GREENSTAR HE PLUS-FSN- GB28KW | 47-311-56 | 47-311-56 | — | — |
| WORCESTER BRITISH GAS GREENSTAR GREENSTAR HE-FSN-GB NG 27KW | 47-311-55 | 47-311-55 | — | — |
| WORCESTER BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 30KW COND COM | 41-108-09 | 41-108-09 | — | — |
| WORCESTER BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 37KW COND COM | 41-108-10 | 41-108-10 | — | — |
| WORCESTER BRITISH GAS GREENSTAR RD428 | 41-108-07 | 41-108-07 | — | — |
| WORCESTER BRITISH GAS GREENSTAR RD537I | 47-108-11 | 47-108-11 | — | — |
| WORCESTER BRITISH GAS RD430I | 41-108-06 | 41-108-06 | — | — |
| WORCESTER BRITISH GAS RD532 | 47-108-13 | 47-108-13 | — | — |
| WORCESTER BRITISH GAS RD532I | 47-108-10 | 47-108-10 | — | — |
Showing 10 of 94 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
WORCESTER appliance manual — BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 30KW COND COM (GC 41-108-09), BRITISH GAS GREENSTAR ICC2-FSN-GB NAT 37KW COND COM (GC 41-108-10)
manualmanualWORCESTER appliance manual — CS1 RSF 28KW NG (GC 41-108-02)
manualmanualWORCESTER appliance manual — GREENSTAR 25 HE (GC 47-311-73), GREENSTAR 30 HE COMBI (GC 47-311-74)
manualmanualWORCESTER appliance manual — GREENSTAR 28 HE SYSTEM (GC 41-311-58)
manualmanualWORCESTER appliance manual — GREENSTAR 29 HE CONVENTIONAL (JAN 2003) (GC 41-311-59), GREENSTAR 29 HE CONVENTIONAL (JUN 2002) (GC 41-311-56)
manualmanualWORCESTER appliance manual — GREENSTAR 30 HE PLUS COMBI (GC 47-311-75), GREENSTAR 35 HE PLUS COMBI (GC 47-311-76), GREENSTAR HE PLUS-FSN-GB35KW (GC 47-311-57)
manualmanualWORCESTER appliance manual — GREENSTAR FS 30CDi ErP REGULAR LPG (GC 41-406-63), GREENSTAR FS 30CDi ErP REGULAR NG (GC 41-406-62), GREENSTAR FS 42CDi ErP REGULAR LPG (GC 41-406-65), GREENSTAR FS 42CDi ErP REGULAR NG (GC 41-406-64)
manualmanualWORCESTER appliance manual — GREENSTAR FS30 CDI REGULAR (GC 41-406-62), GREENSTAR FS30 CDI REGULAR LPG (GC 41-406-63), GREENSTAR FS42 CDI REGULAR (GC 41-406-64), GREENSTAR FS42 CDI REGULAR LPG (GC 41-406-65)
manualmanualWORCESTER appliance manual — GREENSTAR HIGHFLOW 440 (GC 47-311-82)
manualmanualWORCESTER appliance manual — GREENSTAR HIGHFLOW 440CDI LPG (GC 47-406-26), GREENSTAR HIGHFLOW 440CDI NG (GC 47-406-24), GREENSTAR HIGHFLOW 550CDI LPG (GC 47-406-25), GREENSTAR HIGHFLOW 550CDI NG (GC 47-406-27)
manualmanualWORCESTER appliance manual — GREENSTAR HIGHFLOW 440CDi ErP LPG (7731600099) (GC 47-406-90), GREENSTAR HIGHFLOW 440CDi ErP NG (7731600098) (GC 47-406-89), GREENSTAR HIGHFLOW 550CDi ErP LPG (7731600101) (GC 47-406-92), GREENSTAR HIGHFLOW 550CDi ErP NG (7731600100) (GC 47-406-91)
manualmanualWORCESTER appliance manual — GREENSTAR HIGHFLOW 440CDi ErP LPG (7738100590) (GC 47-406-86), GREENSTAR HIGHFLOW 440CDi ErP NG (7738100589) (GC 47-406-85), GREENSTAR HIGHFLOW 550CDi ErP LPG (7738100592) (GC 47-406-88), GREENSTAR HIGHFLOW 550CDi ErP NG (7738100591) (GC 47-406-87)
manualmanualWORCESTER appliance manual — GREENSTAR R25HE COMBI (GC 47-311-77), GREENSTAR R30HE COMBI (GC 47-311-78)
manualmanualWORCESTER appliance manual — GREENSTAR R28HE SYSTEM (GC 41-311-62)
manualmanualWORCESTER appliance manual — GREENSTAR R29HE CONVENTIONAL (GC 41-311-60), GREENSTAR R40HE CONVENTIONAL (GC 41-311-61)
manualmanualWORCESTER appliance manual — GREENSTAR R30HE PLUS COMBI (GC 47-311-79), GREENSTAR R35HE PLUS COMBI (GC 47-311-80), GREENSTAR R40HE PLUS COMBI (GC 47-311-81)
manualmanualWORCESTER appliance manual — GREENSTAR RSF COMBI NG (GC 47-311-44), GREENSTAR ZWBR 11-25 A31 LPG (GC 47-311-45)
manualmanualWORCESTER appliance manual — ICS1 RSF 28KW NG (GC 41-108-04)
manualNo technical questions yet for this part.
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