Finish Thompson J102447 Viton Diffuser O-Ring
This is the factory viton diffuser o-ring for Finish Thompson MSKC and MSVKC multistage magnetic drive pumps. It is the standard fluoroelastomer seal at the diffuser, keeping the pressure rise from the first stage inside the flow path. It is built in Viton FKM fluoroelastomer, which is what decides where it can safely be used.
It is one of the parts worth renewing on schedule instead of waiting for a fault. Renew it whenever the pump is split, because an interstage leak shows up only as missing head and is easy to misdiagnose as a worn impeller. Check the pump build before ordering, because these pumps are offered in more than one material and size combination and the alternatives look similar on the shelf.
Key Features
- Viton Diffuser O-Ring in Viton FKM fluoroelastomer built to the original factory specification
- Factory standard Viton FKM diffuser seal
- Suits acids, hydrocarbons and oxidizing chemistry
- Sized and finished to drop straight into the position it came from
- Inexpensive component whose failure takes the whole pump out of service
Applications
- Finish Thompson MSKC and MSVKC multistage magnetic drive pumps
- Multistage chemical transfer at higher heads
- Rebuild of an MSKC or MSVKC pump
- Scheduled overhaul and annual inspection of the pump
- Repair of a pump taken out of service after a leak or a loss of performance
Specifications
- Brand: Finish Thompson
- Manufacturer Part Number: J102447
- Part Type: Viton Diffuser O-Ring
- Material: Viton FKM fluoroelastomer
- Position: Diffuser joint between stages
- Fits: Finish Thompson MSKC and MSVKC multistage magnetic drive pumps
- Quantity Per Pump: 1
- Condition: New
Frequently Asked Questions
Q: What does a flattened cross section mean?
It is compression set, and it tells you the ring has given up the elastic recovery that keeps a joint tight through heat cycles.
Q: Should the mating groove be cleaned before fitting?
Yes. Old elastomer residue or dried product in the groove stops the new ring seating flat and is a common cause of a repeat weep.
Q: Can the ring be stretched over a housing to fit it?
A small amount of stretch is normal during assembly, but it should relax back into the groove before the joint is drawn together.
Q: How should spare rings be stored?
Cool, dark and away from electric motors, because sunlight and ozone age rubber long before it ever reaches the pump.
Not sure this is the right part? Send us a Picture of the pump plate on your pump and the CLR Marine team will confirm the correct diffuser O-ring before you order.
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