Mechanical Seals & O-Rings
Seal ring
Ring / seat for CNP pumps, used in 1 CNP series and listed in Cast iron.
- Ø D outside diameter
- Ø d inside (bore) diameter
- t thickness / width
What it is
A precision ring that seats a seal, closes the clearance at the impeller or spaces components in the pump.
How it works
It holds a seal or keeps the running clearance between rotating and fixed parts small so less liquid recirculates and efficiency stays high.
- Part group
- Mechanical Seals & O-Rings
- Used in
- 1 CNP series
- Materials
- Cast iron
- Standard
- HT250
- Supply
- Quoted per pump model
Signs it needs replacing
- Falling flow or pressure as clearances open up
- Scoring or grooves on the ring
- Leakage past the seat
Selection & fitting tips
- Replace wear rings when clearance has doubled
- Match material to the liquid (stainless steel, cast iron, PBT/NBR)
- Fit square and press evenly
What to send us to order
Pump model code and stage/position, quantity.
We identify the exact part for your pump and reply with price and delivery.
Request a quotationSeries that use the seal ring
| Series | Listed as | Material | Standard | Fits sizes | |
|---|---|---|---|---|---|
| NSC (double-suction split casing) | Seal ring | Cast iron | HT250 | All sizes |
Related parts
Blade mechanical seal3 series
Knife type mechanical seal2 series
Mechanical seal23 series
O-ring12 series
O-ring seal3 series
Rubber parts2 series
Seal base3 series
How to order. Send us the pump model code (from the nameplate) and the quantity. We identify the exact part for your pump and reply with price and delivery. Use the part finder if you only know the model.