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Worcester Bosch O-Ring 87102050640

Worcester Bosch

Worcester Bosch O-Ring 87102050640

O-ring seal for Worcester Greenstar RSF natural gas boilers, manufactured by Worcester Bosch.

At a glance

  • Also known as 1012359
Manufacturer part no.
87102050640
Showing prices

£1.19

£0.99 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 87102050640 is an O-ring used as a sealing component within Worcester Greenstar RSF natural gas boilers. It forms a compression seal at the joint where it is fitted, preventing water or gas from escaping past the mating surfaces. It is supplied as an individual sealing component for service and repair work.

Signs this part needs replacing

  • Visible water weeping or a damp trace around the joint the O-ring seals
  • The O-ring has hardened, flattened or cracked with age and heat cycling
  • Scale or corrosion deposits on the seal surface preventing a clean seal
  • Persistent dripping at the connection after the joint has been remade
  • Discolouration or swelling of the rubber indicating it has degraded

Before you order

  • Confirm your boiler model against the manufacturer's parts list before ordering
  • Check the part number 87102050640 matches the component you are replacing
  • Inspect the joint and mating surfaces for damage or scale that could affect the new seal
  • Confirm how many O-rings the repair requires, as this listing is for a single component

Not sure which part?

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