Ideal
Ideal Washer 177990
Ideal washer, part 177990 (4038570), for Evojet commercial boiler models; check the compatibility list to confirm your appliance.
At a glance
- Part type: gaskets, o-rings, seals and washers
- Appliance family: Ideal Commercial Evojet
£144.40
£120.33 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 Ideal 177990 is a washer used on Ideal Commercial Evojet appliances. It sits at a joint or connection inside the appliance and forms the sealing face that stops water escaping past the mating surfaces. Washers of this type are consumable items: they compress on assembly and are normally renewed whenever the joint is disturbed for servicing or repair.
Signs this part needs replacing
- Water weeping or dripping from a joint after the appliance has been reassembled
- A visible damp trail, staining or limescale crust around the sealing face
- The old washer is flattened, hardened or cracked when the joint is opened
- The washer has been reused more than once and no longer sits proud of its seating
- A joint that will not seal despite correct tightening
Before you order
- Confirm your appliance model against the compatibility list, as this washer is listed for Evojet commercial units only
- Check the part number on the appliance or in the service documentation matches 177990 or 4038570
- Have the appliance model and serial number to hand when ordering
- If the joint uses additional seals, inspect them at the same time so the repair is completed in one visit
Mechanical
| Part type | Gaskets, o-rings, seals and washers |
|---|---|
| Appliance family | Ideal Commercial Evojet |
Compliance
| Manufacturer part number (MPN) | 177990 |
|---|---|
| GPC classification | Central Heating Replacement Parts/Accessories |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| IDEAL COMMERCIAL EVOJET 1250 MODUATE 0 TO 10V 3PH R | — | — | — | |
| IDEAL COMMERCIAL EVOJET 1450 MODUATE READY 3PH R | — | — | — | |
| IDEAL COMMERCIAL EVOJET 150 | — | — | — | |
| IDEAL COMMERCIAL EVOJET 210 | — | — | — | |
| IDEAL COMMERCIAL EVOJET 210 2 STAGE OI R | — | — | — | |
| IDEAL COMMERCIAL EVOJET 270 | — | — | — | |
| IDEAL COMMERCIAL EVOJET 270 MODUATE 0 TO 10V OI R | — | — | — | |
| IDEAL COMMERCIAL EVOJET 270 MODUATE READY R | — | — | — | |
| IDEAL COMMERCIAL EVOJET 350 | — | — | — | |
| IDEAL COMMERCIAL EVOJET 450 MODUATE RWF 3PH R | — | — | — |
Showing 10 of 13 compatible appliances.
Documents & drawings
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