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Sime Gasket 2030226

Sime

Sime Gasket 2030226

Sime expansion vessel connection gasket measuring 10.2mm x 14.8mm x 2mm, used across a range of Sime gas boilers.

At a glance

  • Also known as GASKET--102X148X2, 2040056
Manufacturer part no.
2030226
Showing prices

£1.02

£0.85 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 2030226 is a flat gasket measuring 10.2mm x 14.8mm x 2mm, used at the expansion vessel connection on Sime gas boilers. It seals the joint between the expansion vessel connection and the boiler pipework, preventing water loss and maintaining system pressure. The gasket is a consumable item and should be renewed whenever the joint is disturbed.

Signs this part needs replacing

  • Water weeping or damp staining around the expansion vessel connection
  • Visible cracking, hardening or perishing of the gasket material
  • Gradual loss of system pressure requiring frequent top-ups
  • Scale or corrosion deposits at the joint face
  • Gasket flattened or deformed once the joint is opened

Before you order

  • Confirm the part number 2030226 matches the one listed for your appliance
  • Check the gasket dimensions (10.2mm x 14.8mm x 2mm) against the item removed
  • Verify your boiler model appears in the fitment list above
  • Confirm the gasket is intended for the expansion vessel connection on your appliance

Not sure which part?

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