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Worcester Bosch O-Ring 2.5mm x 10mm EP50 87161408480

Worcester Bosch

Worcester Bosch O-Ring 2.5mm x 10mm EP50 87161408480

Worcester Bosch O-ring 87161408480, 2.5mm x 10mm in EP50 rubber, for 24 CDI and other Worcester Bosch boiler models.

At a glance

  • Part type: Gasket, O-ring, seal and washer
  • Also known as 1017591
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161408480
GC number
E80-460
Showing prices

£4.19

£3.49 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 87161408480 is a small O-ring seal with a 2.5mm x 10mm cross-section, moulded in EP50 rubber. It sits in a machined groove and compresses between two mating faces to stop water escaping from the joint it serves. It is a service item, renewed whenever the joint is opened or the ring has hardened, flattened or cracked.

Signs this part needs replacing

  • Water weeping or a visible drip at the joint the O-ring seals
  • The ring has hardened, flattened or lost its round cross-section
  • Cracks, splits or a shiny, compressed face on the rubber
  • Scale or corrosion debris sitting in the seal groove
  • A joint that still seeps after being cleaned and re-tightened

Before you order

  • Check the GC number and appliance serial on the data badge to confirm the model.
  • Match the part number against the number on the existing component or the manufacturer's parts list.
  • If the appliance is being stripped down for other work, check whether other seals in the same assembly also need renewing.
  • 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.