Viessmann
Viessmann O-Ring 8 x 2 7831409
Viessmann O-ring, 8 x 2 mm, supplied in a pack of five for use on Vitodens gas boiler assemblies.
At a glance
- Also known as 2321106
£29.06
£24.22 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 Viessmann O-ring 8 x 2 is a small sealing ring used on Viessmann Vitodens gas boiler assemblies. It provides a compressible seal at the point of fitment, preventing water or gas from weeping past a joint. This part is supplied as a pack of five, manufacturer part number 7831409.
Signs this part needs replacing
- Visible weeping or a damp trace around the joint where the O-ring sits
- A hardened, flattened or perished ring that no longer springs back when compressed
- Cracking, nicks or a split running through the ring section
- Scale or corrosion deposits built up on the sealing face
- Repeated pressure loss or a drip that returns shortly after tightening
Before you order
- Confirm the appliance model and serial number against the fitment list above
- Check that the failed ring is marked or measured as 8 x 2 mm before ordering
- Confirm how many sealing points you intend to renew, as the pack contains five rings
- Verify the manufacturer part number 7831409 against the appliance's parts listing
Compliance
| Alternative numbers | 2321106 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS 050-W BPJC 29 KW COMBI SERIAL No. 7537906 | 47-819-31 | 47-819-31 | — | — |
| VIESSMANN VITODENS 050-W BPJC 35 KW COMBI SERIAL No. 7537947 | 47-819-32 | 47-819-32 | — | — |
| VIESSMANN VITODENS 050-W BPJD 29KW COMBI SERIAL No. 7202938 | 47-819-38 | 47-819-38 | — | — |
| VIESSMANN VITODENS 050-W BPJD 35 KW COMBI SERIAL No. 7202939 | 47-819-39 | 47-819-39 | — | — |
| VIESSMANN VITODENS 100-W B1HA 19 KW SYSTEM ERP SERIAL No. 7543420 | 41-819-36 | 41-819-36 | — | — |
| VIESSMANN VITODENS 100-W B1HA 26 KW SYSTEM ERP SERIAL No. 7543421 | 41-819-37 | 41-819-37 | — | — |
| VIESSMANN VITODENS 100-W B1HA 26 SERIAL No. 7560853 | — | — | — | |
| VIESSMANN VITODENS 100-W B1HA 30 KW SYSTEM ERP SERIAL No. 7543423 | 41-819-38 | 41-819-38 | — | — |
| VIESSMANN VITODENS 100-W B1HA 35 KW SYSTEM ERP SERIAL No. 7543425 | 41-819-39 | 41-819-39 | — | — |
| VIESSMANN VITODENS 100-W B1HA 35 SERIAL No. 7560854 | — | — | — |
Showing 10 of 86 compatible appliances.
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.
VIESSMANN appliance manual — VITODENS 222-F B2TB 19 SERIAL NO. 7542250, VITODENS 222-F B2TB 35 SERIAL NO. 7542251
manualmanualVIESSMANN appliance manual — VITODENS WB1C 100-W 19 KW SYSTEM SERIAL No. 7499423 (GC 41-819-26), VITODENS WB1C 100-W 26 KW SYSTEM SERIAL No. 7499424 (GC 41-819-27), VITODENS WB1C 100-W 26KW COMBI SERIAL No. 7499425 (GC 47-819-20), VITODENS WB1C 100-W 30 KW COMBI SERIAL No. 7499427 (GC 47-819-21), VITODENS WB1C 100-W 30 KW SYSTEM SERIAL No. 7499426 (GC 41-819-28), VITODENS WB1C 100-W 30KW GB COMBI SERIAL No. 7441745 (GC 47-819-21), VITODENS WB1C 100-W 35 KW COMBI SERIAL No. 7499429 (GC 47-819-22), VITODENS WB1C VITODENS 100-W 35 KW SYSTEM SERIAL No. 7499428 (GC 41-819-29)
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