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Ideal Washer 177989

Ideal

Ideal Washer 177989

Ideal 177989 washer (alt. 4038507) for Ideal Commercial Evojet appliances, sealing mating faces against water leaks.

At a glance

  • Part type: gaskets, o-rings, seals and washers
Manufacturer part no.
177989
Showing prices

£117.36

£97.80 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Ideal 177989 is a washer used in Ideal Commercial heating appliances. It sits between mating faces in a water-carrying joint and compresses under load to form a seal, stopping water from weeping past the connection. This is a small service item, so it is normally replaced whenever the joint it seals is disturbed.

Signs this part needs replacing

  • Water weeping or dripping from the joint the washer seals
  • Visible water staining, scale or corrosion around the connection
  • The washer has hardened, flattened or cracked with heat and age
  • The joint has been opened for other work and the old washer will not reseal
  • Loose or reduced compression at the fitting after reassembly

Before you order

  • Confirm your appliance model and serial number against the compatibility list, as Ideal Commercial assemblies vary between variants
  • Check the alternative number 4038507 against the marking on the old washer or the parts list for your appliance
  • Inspect the joint faces and any related seals at the same time, as a scored or corroded face will not seal with a new washer alone

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.