Andrews
Andrews O-Ring P18 Z521
O-ring P18, part Z521, for Andrews water heaters and hot water appliances.
At a glance
- Also known as 1824480
£8.09
£6.74 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 O-Ring P18 is a sealing component supplied by Andrews for use in Andrews water heaters and hot water appliances. It forms a watertight seal at the joint or connection where it is fitted, preventing weeping and loss of pressure. Part number Z521.
Signs this part needs replacing
- Water weeping or dripping from the joint the O-ring seals
- Visible hardening, flattening or cracking of the ring
- Scale or corrosion build-up around the seal face
- Persistent pressure loss traced to the sealed connection
- The ring no longer sits proud of its groove when refitted
Before you order
- Confirm the part number Z521 against your appliance's parts list
- Check your Andrews model against the manufacturer's documentation
- Inspect the joint and O-ring groove for damage or scale before refitting
- Verify the ring size and profile match the one removed
Compliance
| Alternative numbers | 1824480 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ANDREWS WATER HEATERS ANDREWS HOT WATER SPARES | — | — | — |
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.
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