Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Hanicks
Basket
Ariston O-Ring 61312979

Ariston

Ariston O-Ring 61312979

Ariston O-ring, 18 mm x 3.15 mm, part number 61312979, for Combi A 24 MFFI and A 30 MFFI boilers.

At a glance

  • Also known as O-RING-D-18-315
Manufacturer part no.
61312979
Showing prices

£2.42

£2.02 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 61312979 is a sealing O-ring measuring 18 mm x 3.15 mm. It is used within the hydraulic and gas-carrying assemblies of Ariston Combi A MFFI boilers to seal mating surfaces against leaks. It is classed as an O-ring, washer and gasket component in the boiler spares range.

Signs this part needs replacing

  • Visible water or gas weeping from the joint the O-ring seals
  • The O-ring is cracked, split or perished
  • The rubber has hardened or lost its flexibility
  • The O-ring has flattened and no longer sits proud of its groove
  • Scale or corrosion debris is present on the sealing face

Before you order

  • Confirm your boiler model matches one of the fitments listed above
  • Check the existing O-ring dimensions are 18 mm x 3.15 mm
  • Check the GC number on your appliance data badge against the relevant model variant
  • Confirm how many O-rings are required for the joint being worked on

Not sure which part?

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