Sime
Sime O-Ring 6226443
O-ring 11.5mm x 1.5mm for Sime Ecomfort gas boilers, part number 6226443.
At a glance
- Also known as O-RING--115-X-15, 2042122
Showing prices
£1.21
£1.01 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 6226443 is an O-ring measuring 11.5mm x 1.5mm. It is used in Sime Ecomfort gas boilers to seal connections and prevent leaks.
Signs this part needs replacing
- Water or gas leaks at the joint where the O-ring is fitted
- Visible cracks, flattening or hardening of the O-ring
- Persistent drips or pressure loss in the system
- Discolouration or deformation of the rubber
Before you order
- Confirm your boiler model against the fit list
- Check the O-ring dimensions (11.5mm x 1.5mm) match your requirement
- Verify the Sime part number 6226443
- Ensure you order the correct quantity for your repair
Compliance
| Alternative numbers | O-RING--115-X-15, 2042122 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SIME ECOMFORT 25HE | 47-283-06 | 47-283-06 | — | — |
| SIME ECOMFORT 30HE | 47-719-25 | 47-719-25 | — | — |
| SIME ECOMFORT 35HE | 47-283-09 | 47-283-09 | — | — |
| SIME ECOMFORT PLUS 25 HE-EV (WITHOUT TIME CLOCK) - 8104026 | 47-283-32 | 47-283-32 | — | — |
| SIME ECOMFORT PLUS 25 HE-EV - 8104022 | 47-283-30 | 47-283-30 | — | — |
| SIME ECOMFORT PLUS 25HE - 8104012 | 47-283-13 | 47-283-13 | — | — |
| SIME ECOMFORT PLUS 25HE SYSTEM - 8104013 | 41-283-10 | 41-283-10 | — | — |
| SIME ECOMFORT PLUS 30 HE - 8104011 | 47-283-14 | 47-283-14 | — | — |
| SIME ECOMFORT PLUS 30 HE-EV (WITHOUT TIME CLOCK) - 8104025 | 47-283-33 | 47-283-33 | — | — |
| SIME ECOMFORT PLUS 30 HE-EV - 8104021 | 47-283-31 | 47-283-31 | — | — |
Showing 10 of 24 compatible appliances.
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
manual
SIME appliance manual — ECOMFORT 25HE (GC 47-283-06), ECOMFORT 30HE (GC 47-719-25), ECOMFORT 35HE (GC 47-283-09), ECOMFORT SYSTEM 25HE (GC 41-283-04)
manualmanualSIME appliance manual — ECOMFORT PLUS 25 HE-EV (WITHOUT TIME CLOCK) - 8104026 (GC 47-283-32), ECOMFORT PLUS 25 HE-EV - 8104022 (GC 47-283-30), ECOMFORT PLUS 30 HE-EV (WITHOUT TIME CLOCK) - 8104025 (GC 47-283-33), ECOMFORT PLUS 30 HE-EV - 8104021 (GC 47-283-31), ECOMFORT SYSTEM PLUS 25 HE-EV - 8104030 (GC 41-283-26)
manualmanualSIME appliance manual — ECOMFORT PLUS 25HE - 8104012 (GC 47-283-13), ECOMFORT PLUS 25HE SYSTEM - 8104013 (GC 41-283-10), ECOMFORT PLUS 30 HE - 8104011 (GC 47-283-14)
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