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Worcester Bosch O-Ring 17mm x 4mm 87167711540

Worcester Bosch

Worcester Bosch O-Ring 17mm x 4mm 87167711540

Worcester Bosch 17mm x 4mm O-ring, part 87167711540, for sealing joints at pumps, heat exchangers and pipework across 527 Worcester and British Gas appliances.

At a glance

  • Part type: O-ring, gasket, seal and washer
  • Also known as 1019875, N1177
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87167711540
GC number
H04-832
Showing prices

£3.95

£3.29 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 Worcester Bosch 87167711540 is a 17mm x 4mm O-ring from the manufacturer's gaskets, O-rings, seals and washers range. It is used to seal joints between pipework and other components inside Worcester Bosch boilers, including heat exchangers and pumps, where a tight joint is needed to stop water or gas escaping. The ring sits in a machined groove and compresses as the joint is tightened, closing the gap between the mating faces.

Signs this part needs replacing

  • Water weeping or a visible drip at a pump, heat exchanger or pipework joint
  • A joint that will not seal after being stripped down and rebuilt
  • The ring feels hard, flattened or cracked once removed
  • Scale, corrosion or staining around the seating groove
  • System pressure dropping with no obvious leak elsewhere

Before you order

  • Check the GC number and the appliance serial plate to confirm this O-ring suits your model.
  • Compare the alternative and previous numbers listed above against the part you are replacing.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

Not sure which part?

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