Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Hanicks
Basket
Sime O-Ring Dalmar R7 6226446

Sime

Sime O-Ring Dalmar R7 6226446

Sime O-ring Dalmar R7, part 6226446, a sealing component for Sime gas boilers including Format, Open and Metropolis models.

At a glance

  • Also known as 2042866
Manufacturer part no.
6226446
Showing prices

£1.39

£1.16 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 Sime O-Ring Dalmar R7 (part 6226446) is a sealing O-ring used on Sime gas boilers. It sits in the joint it serves and seals the connection against water loss. It is listed in the Sime boiler spares range under O-rings, washers and gaskets.

Signs this part needs replacing

  • Water weeping or dripping from the joint the O-ring seals
  • The O-ring is flattened, cracked or visibly perished
  • The rubber has hardened and no longer sits proud of its groove
  • Scale or corrosion deposits around the sealing face
  • A leak that returns shortly after the joint is tightened

Before you order

  • Confirm your boiler model and GC number against the fitment list above
  • Check that part number 6226446 matches the O-ring being removed
  • Identify which joint the O-ring serves, as more than one O-ring may be used on the appliance
  • Isolate and drain the appliance where the joint requires it before work starts

Not sure which part?

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