Main
Main Washer 25mm x 21mm x 2mm 5110861
25mm x 21mm x 2mm washer for Main Multipoint BF and FF water heaters, including ErP models.
At a glance
- Also known as 1160444
£13.38
£11.15 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 Main 5110861 is a flat washer measuring 25mm outside diameter, 21mm inside diameter and 2mm thick. It is used on Main Multipoint BF and FF water heaters, including the ErP variants, to seal a connection joint against water loss. The washer compresses between mating faces to form a watertight seal at the point of fitment.
Signs this part needs replacing
- Water weeping or dripping from the joint where the washer sits
- Visible flattening, hardening or cracking of the washer
- Scale or corrosion deposits around the sealing face
- Persistent dampness or staining beneath the connection
- Leaks that return shortly after tightening the joint
Before you order
- Confirm your appliance model against the fitment list above
- Check the existing washer dimensions match 25mm x 21mm x 2mm
- Inspect the mating faces for scale or damage before fitting
- Confirm how many washers are required for the job
Compliance
| GC number | H18-094 |
|---|---|
| Alternative numbers | 1160444 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| MAIN MAIN MULTIPOINT BF | 52-467-01 | 52-467-01 | — | — |
| MAIN MAIN MULTIPOINT BF ErP | 52-467-01 | 52-467-01 | — | — |
| MAIN MAIN MULTIPOINT FF | 52-467-02 | 52-467-02 | — | — |
| MAIN MAIN MULTIPOINT FF ErP | 52-467-02 | 52-467-02 | — | — |
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.
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