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Andrews O-Ring JASO 2026 Type Z401

Andrews

Andrews O-Ring JASO 2026 Type Z401

O-ring of JASO 2026 type for Andrews water heaters, including Fastflo LWH42, LWH56, WH42 and WH56 models.

At a glance

  • Part type: O-ring, JASO 2026 type
  • Also known as 1824290
Manufacturer part no.
Z401
Showing prices

£13.00

£10.83 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 Andrews Z401 is an O-ring of JASO 2026 type, supplied for Andrews water heaters. It seals a joint within the appliance to stop water escaping. It is a service part for the Fastflo and related Andrews hot water ranges.

Signs this part needs replacing

  • Water weeping or dripping from the joint the O-ring seals
  • Visible flattening, hardening or cracking of the ring
  • The ring has lost its round profile or shows a permanent set
  • Scale or corrosion around the sealing face
  • Leaks that return shortly after the joint is tightened

Before you order

  • Confirm your appliance model against the fit list above.
  • Check the existing O-ring is identified as JASO 2026 type.
  • Inspect the sealing face for damage before fitting a new ring.

Not sure which part?

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