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Worcester Bosch O-Ring 2.0mm x 16.00mm ID 87161408140

Worcester Bosch

Worcester Bosch O-Ring 2.0mm x 16.00mm ID 87161408140

Worcester Bosch O-ring, 2.0mm section x 16.00mm ID, pack of 10, for hydraulic and gas joints on CDi, i Series, Greenstar Oil and SBi boilers.

At a glance

  • Part type: O-ring (gaskets, seals and o-rings)
  • Also known as 1017553
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161408140
GC number
299-405
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 O-ring (part 87161408140) is a 2.0mm section, 16.00mm internal diameter sealing ring used at joints throughout the boiler's hydraulic and gas-carrying assemblies. It seats between components such as heat exchangers and gas valves and the pipework they connect to, forming a compression seal that keeps water and gas contained. The ring is supplied in packs of ten and is used across the CDi, CDiXtra, Highflow, i Series, Greenstar Oil and SBi ranges.

Signs this part needs replacing

  • Water weeping or dripping from a joint on the hydraulic side of the boiler
  • A smell of gas or a leak detected at a gas valve or pipe connection
  • The ring looks flattened, hardened, cracked or swollen once the joint is opened
  • Scale or debris sitting in the seal groove, preventing the ring seating properly
  • Repeated loss of system pressure with no other obvious cause

Before you order

  • Check the model and GC number on the boiler data badge against the compatibility list; the GC number listed for this part is 299-405.
  • Confirm the existing O-ring dimensions before ordering, as more than one size is used across these boiler ranges.
  • The pack contains ten rings, which covers jobs where several joints are disturbed at the same time.
  • 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.