Alpha
Alpha O-Ring Seal 1.013421
Viton O-ring seal, 25.8mm x 3.53mm, part 1.013421, for Alpha Cd115S and Cd90S LPG gas boilers.
At a glance
- Also known as ORING-258-X-353-VITON, 1250070
£5.81
£4.84 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Alpha 1.013421 is an O-ring seal measuring 25.8mm x 3.53mm, manufactured in Viton. It is used in Alpha gas boiler applications to seal the joint between mating components and prevent leakage. The seal is a serviceable item within the O-rings, washers and gaskets category.
Signs this part needs replacing
- Visible cracking, splitting or perishing of the rubber
- A hardened or brittle seal that no longer compresses
- A flattened or deformed profile that will not seat correctly
- Weeping or dripping at the joint the O-ring seals
- Black residue or debris around the seal seating
Before you order
- Confirm the O-ring dimensions match: 25.8mm x 3.53mm
- Check the appliance model against the fit list above
- Verify Viton is suitable for the fluid and temperature at the joint
- Quote part number 1.013421 when ordering
Compliance
| Alternative numbers | ORING-258-X-353-VITON, 1013421, 1250070 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA CD115S | — | — | — | |
| ALPHA CD115S (LPG) | — | — | — | |
| ALPHA CD90S | — | — | — | |
| ALPHA CD90S (LPG) | — | — | — |
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.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.