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Sime Flange + O Ring for DAB Pump 6281521

Sime

Sime Flange + O Ring for DAB Pump 6281521

Flange and O ring for the DAB pump head to manifold connection on Sime gas boilers.

At a glance

  • Also known as FLANGE--OR-FOR-DAB-PUMP, 2041786
Manufacturer part no.
6281521
Showing prices

£33.50

£27.92 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 6281521 is a flange with O ring for the DAB pump, used on Sime gas boilers. It forms the sealed connection between the pump head and the manifold. The O ring sits within the flange to seal that joint against water leaks.

Signs this part needs replacing

  • Water weeping or dripping at the pump head to manifold joint
  • Staining, corrosion or scale on the flange face
  • A flattened, hardened or perished O ring
  • Falling system pressure that needs frequent topping up

Before you order

  • Confirm the circulator fitted is a DAB pump
  • Check your appliance model and GC number against the fitment list
  • Inspect the flange face and O ring seating before reassembly

Not sure which part?

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