Worcester Bosch
Worcester Bosch Seal 80MM 87379029700
Worcester Bosch 80 mm seal, part 87379029700, for Greenstar 2000 and 4000 combi and system boilers.
At a glance
- Also known as 1038245
£15.37
£12.81 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 SEAL 80MM is an 80 mm sealing component manufactured by Worcester Bosch, supplied under part number 87379029700. It is fitted within the hydraulic assemblies of Greenstar 2000 and Greenstar 4000 series combi and system boilers, where it forms a watertight joint between mating components. Seals of this type are replaced when the joint begins to weep or when the seal is disturbed during servicing.
Signs this part needs replacing
- Water weeping or a visible drip at the joint the seal serves
- Staining, corrosion or scale deposits around the sealing face
- The seal is hardened, flattened or no longer sits proud of its groove
- Cracking, splitting or perishing visible on the seal material
- A leak reappears at the joint shortly after the assembly has been disturbed
Before you order
- Confirm the boiler model and GC number against the fits list above
- Check the part number 87379029700 matches the number shown in the appliance parts list
- Verify the seal diameter of 80 mm matches the sealing groove on the component being worked on
- Inspect adjacent seals and O-rings in the same assembly, as these are often disturbed at the same time
Compliance
| Alternative numbers | 1038245 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 25 C LPG | 47-800-27 | 47-800-27 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 25 C NG | 47-800-26 | 47-800-26 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 30 C LPG | 47-800-29 | 47-800-29 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2300iW 30 C NG | 47-800-28 | 47-800-28 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 25 C LPG | 47-800-35 | 47-800-35 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 25 C NG | 47-800-34 | 47-800-34 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 30 C LPG | 47-800-37 | 47-800-37 | — | — |
| WORCESTER GREENSTAR 2000 COMBI GR2301iW 30 C NG | 47-800-36 | 47-800-36 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 25 C LPG | 47-800-31 | 47-800-31 | — | — |
| WORCESTER GREENSTAR 4000 COMBI GR4700iW 25 C NG | 47-800-30 | 47-800-30 | — | — |
Showing 10 of 44 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.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.