Worcester Bosch
Worcester Bosch O-Ring Pack of 10 87102051030
Worcester Bosch 87102051030 O-ring, supplied as a pack of 10, for sealing joints in Greenstar combi and system appliances.
At a glance
- Part type: O-rings and lip seals
- Also known as 1012379
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Showing prices
£4.19
£3.49 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 87102051030 is an O-ring used to seal joints and connections inside the appliance's water and heating circuit. It is a small elastomer seal that sits in a machined groove and is compressed when the joint is tightened, preventing weeping at the mating faces. The part is listed under Worcester Bosch's O-rings and lip seals range and is supplied in a pack of ten.
Signs this part needs replacing
- Water weeping or a visible drip at a joint or connection after the appliance has run
- The ring looks flattened, cracked, nicked or has hardened with age
- Scale, sludge or debris trapped on the sealing face, preventing a clean seal
- Repeated pressure loss on the heating circuit with no obvious leak elsewhere
- A slight seepage that appears after a component has been removed and refitted
Before you order
- Check the GC number and appliance serial plate to confirm the model before ordering, as the same part number can be listed against several appliance variants.
- Confirm the part number 87102051030 or the alternative number 1012379 against the appliance's parts list.
- If the joint is being opened for another repair, check whether any other seals or gaskets on the same assembly also need renewing.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | O-Rings & Lip Seals |
|---|---|
| Length | 0.1mm |
| Width | 0.1mm |
| Depth | 0.1mm |
Compliance
| Manufacturer part number (MPN) | 87102051030 |
|---|---|
| GC number | H32-091 |
| Barcode / EAN | 4010009968399 |
| Commodity code | 4016 93 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1012379 |
Logistics
| Pack quantity | 10 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER BRITISH GAS 430/I | 41-311-80 | 41-311-80 | — | — |
| WORCESTER BRITISH GAS GREENSTAR 430/I SYSTEM LPG | 41-311-81 | 41-311-81 | — | — |
| WORCESTER BRITISH GAS GREENSTAR 532/I COMBI LPG | 47-406-03 | 47-406-03 | — | — |
| WORCESTER BRITISH GAS GREENSTAR 532/I COMBI NG | 47-406-02 | 47-406-02 | — | — |
| WORCESTER BRITISH GAS GREENSTAR 537/I COMBI LPG | 47-406-05 | 47-406-05 | — | — |
| WORCESTER BRITISH GAS GREENSTAR 537/I COMBI NG | 47-406-04 | 47-406-04 | — | — |
| WORCESTER BRITISH GAS GREENSTAR 542/I COMBI LPG | 47-406-07 | 47-406-07 | — | — |
| WORCESTER BRITISH GAS GREENSTAR 542/I COMBI NG | 47-406-06 | 47-406-06 | — | — |
| WORCESTER GREENSTAR 25CDI EMS COMBI NG | 47-311-92 | 47-311-92 | — | — |
| WORCESTER GREENSTAR 25CDI ENS COMBI LPG | 47-311-96 | 47-311-96 | — | — |
Showing 10 of 87 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 430/I (GC 41-311-80), BRITISH GAS GREENSTAR 430/I SYSTEM LPG (GC 41-311-81)
manualmanualWORCESTER appliance manual — BRITISH GAS GREENSTAR 532/I COMBI LPG (GC 47-406-03), BRITISH GAS GREENSTAR 532/I COMBI NG (GC 47-406-02), BRITISH GAS GREENSTAR 537/I COMBI LPG (GC 47-406-05), BRITISH GAS GREENSTAR 537/I COMBI NG (GC 47-406-04), BRITISH GAS GREENSTAR 542/I COMBI LPG (GC 47-406-07), BRITISH GAS GREENSTAR 542/I COMBI NG (GC 47-406-06)
manualmanualWORCESTER appliance manual — GREENSTAR 25CDI EMS COMBI NG (GC 47-311-92), GREENSTAR 25CDI ENS COMBI LPG (GC 47-311-96), GREENSTAR 25CDI PRE EMS COMBI NG (GC 47-311-92), GREENSTAR 30CDI NEW EMS LPG (GC 47-311-97), GREENSTAR 30CDI NEW EMS NG (GC 47-311-93), GREENSTAR 30CDI OLD EMS LPG (GC 47-311-97), GREENSTAR 30CDI OLD EMS NG (GC 47-311-93), GREENSTAR 30CDI PRE EMS COMBI NG (GC 47-311-93), GREENSTAR 35CDI EMS LPG COMBI (GC 47-311-98), GREENSTAR 35CDI EMS NG COMBI (GC 47-311-94), GREENSTAR 35CDI PRE EMS NG COMBI (GC 47-311-94), GREENSTAR 40CDI EMS COMBI LPG (GC 47-406-01), GREENSTAR 40CDI EMS COMBI NG (GC 47-311-95), GREENSTAR 40CDI PRE EMS NG (GC 47-311-95)
manualmanualWORCESTER appliance manual — GREENSTAR 27CDI EMS COMBI LPG (GC 47-406-13), GREENSTAR 27CDI EMS COMBI NG (GC 47-406-12), GREENSTAR 37CDI EMS COMBI LPG (GC 47-406-09), GREENSTAR 37CDI EMS COMBI NG (GC 47-406-08), GREENSTAR 42CDI CLASSIC COMBI LPG (GC 47-406-11), GREENSTAR 42CDI CLASSIC COMBI NG (GC 47-406-10)
manualmanualWORCESTER appliance manual — GREENSTAR 29CDI CLASSIC COMBI LPG (GC 47-406-35), GREENSTAR 29CDI CLASSIC COMBI NG (GC 47-406-34), GREENSTAR 34CDI CLASSIC COMBI LPG (GC 47-406-37), GREENSTAR 34CDI CLASSIC COMBI NG (GC 47-406-36), GREENSTAR 38CDI CLASSIC COMBI LPG (GC 47-406-39), GREENSTAR 38CDI CLASSIC COMBI NG (GC 47-406-38)
manualmanualWORCESTER appliance manual — GREENSTAR 29CDI ErP CLASSIC LPG (GC 47-406-66), GREENSTAR 29CDI ErP CLASSIC NG (GC 47-406-65), GREENSTAR 34CDI ErP CLASSIC LPG (GC 47-406-68), GREENSTAR 34CDI ErP CLASSIC NG (GC 47-406-67), GREENSTAR 38CDI ErP CLASSIC LPG (GC 47-406-70), GREENSTAR 38CDI ErP CLASSIC NG (GC 47-406-69), GREENSTAR 42CDI ErP CLASSIC LPG (GC 47-406-72), GREENSTAR 42CDI ErP CLASSIC NG (GC 47-406-71)
manualmanualWORCESTER appliance manual — GREENSTAR 30CDI CONVENTIONAL LPG (GC 41-311-73), GREENSTAR 30CDI CONVENTIONAL NG (GC 41-311-71), GREENSTAR 40CDI CONVENTIONAL LPG (GC 41-311-74), GREENSTAR 40CDI CONVENTIONAL NG (GC 41-311-72)
manualmanualWORCESTER appliance manual — GREENSTAR 30CDI ErP CLASSIC LPG (GC 41-406-38), GREENSTAR 30CDI ErP CLASSIC NG (GC 41-406-37)
manualmanualWORCESTER appliance manual — GREENSTAR 30CDI ErP CLASSIC REGULAR LPG (GC 41-406-34), GREENSTAR 30CDI ErP CLASSIC REGULAR NG (GC 41-406-33), GREENSTAR 40CDI ErP CLASSIC REGULAR LPG (GC 41-406-36), GREENSTAR 40CDI ErP CLASSIC REGULAR NG (GC 41-406-35)
manualmanualWORCESTER appliance manual — GREENSTAR 30CDI SYSTEM LPG (GC 41-311-97), GREENSTAR 30CDI SYSTEM NG (GC 41-311-93)
manualmanualWORCESTER appliance manual — GREENSTAR 35CDI ErP CLASSIC SYSTEM LPG (GC 41-406-40), GREENSTAR 35CDI ErP CLASSIC SYSTEM NG (GC 41-406-39)
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