Potterton
Potterton Flame Inspection Window Gasket 5139860
Flame inspection window gasket, part 5139860, for Potterton Commercial NXR4I boilers in 8 to 14 section formats.
At a glance
- Appliance family: Potterton Commercial NXR4I
- Isolate the gas and electrical supplies and follow gas safety requirements before opening the combustion area
£2.40
£2.00 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 flame inspection window gasket is a sealing component for Potterton Commercial NXR4I series boilers. It sits behind the flame inspection window and seals the joint between the window and the boiler casing, preventing products of combustion from escaping at that point. The part is supplied under Potterton part number 5139860.
Signs this part needs replacing
- The gasket is visibly perished, cracked or hardened
- Soot staining or discolouration around the flame inspection window
- A smell of combustion products local to the inspection window while the boiler is running
- The inspection window cannot be sealed correctly after removal and refitting
Before you order
- Confirm the boiler is a Potterton Commercial NXR4I and note the section count, as fitment is section dependent
- Check that the existing gasket is removed and the mating faces are clean before fitting the new one
- Verify the part number 5139860 against the marking on the existing gasket or the boiler's documentation
- Isolate the gas and electrical supplies and follow gas safety requirements before opening the combustion area
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| POTTERTON COMMERCIAL NXR4I 10 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 11 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 12 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 13 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 14 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 8 SECTION | — | — | — | |
| POTTERTON COMMERCIAL NXR4I 9 SECTION | — | — | — | |
| POTTERTON COMMERCIAL POTTERTON COMMERCIAL 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.
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