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Ariston Retaining Ring 999227

Ariston

Ariston Retaining Ring 999227

Ariston retaining ring, 16mm diameter, for use in ACO, Ecocombi, Ecogenus and Ecosystem boilers.

At a glance

  • Also known as RETAINING-RING-D16MM, 1577530
Manufacturer part no.
999227
Showing prices

£9.64

£8.03 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 Ariston 999227 is a retaining ring with a 16mm diameter, used in a range of Ariston gas boilers. It secures and locates components within the appliance assembly. This is a small but critical fixing that helps maintain correct positioning and sealing of the parts it holds.

Signs this part needs replacing

  • Visible corrosion, pitting or rust on the ring
  • The ring has lost its shape or tension and no longer holds the component securely
  • Distortion or flattening of the ring profile
  • Leaks or weeping at the joint the ring secures
  • Difficulty refitting the ring during servicing, indicating it has stretched or deformed

Before you order

  • Confirm your boiler model and serial number against the fitment list
  • Check the existing ring diameter is 16mm before ordering
  • Verify the part number 999227 matches the component removed
  • Inspect the surrounding components for wear that may have caused the ring to fail

Not sure which part?

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