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Worcester Bosch O-Ring 12mm x 3mm 10 Pack 87186693850

Worcester Bosch

Worcester Bosch O-Ring 12mm x 3mm 10 Pack 87186693850

Worcester Bosch O-ring, 12mm x 3mm, supplied in a pack of 10 for Greenstar 8000 Life combi boilers and other Worcester Bosch models.

At a glance

  • Part type: Gaskets, o-rings, seals and washers
  • Also known as 2249232
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87186693850
Showing prices

£15.37

£12.81 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

This is a Worcester Bosch O-ring sized 12mm x 3mm, supplied as a pack of 10. It is a sealing component that sits at a joint or connection inside the appliance, compressing to form a watertight barrier and stop weeping or drips. The part is listed against the Worcester Bosch Greenstar 8000 Life combi range and a broad spread of other Worcester Bosch appliances.

Signs this part needs replacing

  • Water weeping or dripping from a joint or union on the appliance
  • Damp staining, corrosion or a limescale trail around a sealed connection
  • An O-ring that has flattened, hardened, cracked or swollen
  • Falling system pressure or a need to top the boiler up repeatedly
  • A slight leak that reappears after the joint is tightened

Before you order

  • Check the GC number or the data plate on the appliance to confirm the model before ordering.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
  • Measure the O-ring removed from the appliance against the 12mm x 3mm size to confirm the match.
  • Consider whether a full gasket and seal kit is needed for the job alongside this pack.

Not sure which part?

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