Worcester Bosch
Worcester Bosch Washer 25mm 87228803270
Worcester Bosch 25mm sealing washer, part 87228803270, for Greenstar and CS1 gas boilers including CC1 and HE ranges.
At a glance
- Part type: Gasket, O-ring, seal and washer
- Also known as 1020231
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£4.25
£3.54 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 Worcester Bosch 25mm washer is a sealing component used at a joint within the boiler's water circuit, where it compresses between mating faces to stop water escaping. It belongs to the manufacturer's range of gaskets, O-rings, seals and washers supplied for servicing and repair work. The washer is sized at 25mm and is fitted across several Worcester Bosch Greenstar and CS1 gas boiler variants.
Signs this part needs replacing
- Water weeping or a visible drip at the joint the washer seals
- Scale deposits, rust staining or crusting around the sealing face
- The washer feels hard, flattened or cracked rather than pliable
- Repeated pressure loss on the system with no other obvious cause
- A joint that has been disturbed during servicing and will not seal again on reassembly
Before you order
- Check the GC number or serial plate on the appliance to confirm the model matches the compatibility list
- Confirm the alternative number 1020231 against the part you are removing
- Inspect the joint for other worn seals and order any additional gaskets or washers needed for the same repair
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Gasket, O-ring, seal and washer |
|---|
Compliance
| Manufacturer part number (MPN) | 87228803270 |
|---|---|
| GC number | E74-912 |
| Barcode / EAN | 4010009621164 |
| Commodity code | 4016 93 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1020231 |
| 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-FSN-GB NG 27KW | 47-311-55 | 47-311-55 | — | — |
| WORCESTER CS1 RSF 28KW NG | 41-108-02 | 41-108-02 | — | — |
| WORCESTER GREENSTAR HE FSN ZB 7 27KW NG | 41-311-49 | 41-311-49 | — | — |
| WORCESTER WORCESTER CC1 NATURAL GAS 29KW | — | — | — | |
| WORCESTER WORCESTER CS1 NATURAL GAS 28KW | — | — | — | |
| WORCESTER WORCESTER GREENSTAR HE 27KW SYSTEM NATURAL GAS | — | — | — | |
| WORCESTER WORCESTER GREENSTAR HE RSF 27KW COMBI NATURAL GAS | — | — | — |
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 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.