Finish Thompson J102389 Viton Impeller Housing O-Ring
The J102389 is the viton impeller housing o-ring used in Finish Thompson KC5.5, KC6, KC6H, KC7, KC8 and KC10 magnetic drive pumps and MSKC multistage pumps. It is the standard fluoroelastomer seal for the impeller housing joint, and on the multistage pumps it seals the first stage. It is built in Viton FKM fluoroelastomer, which is what decides where it can safely be used.
Treat it as a service item rather than a permanent fitting. Swelling, softening or a sticky surface says the elastomer is wrong for the fluid rather than simply worn, and the EPDM alternative may be the better answer. When ordering, match the part to the pump as it was actually built rather than to the catalog model alone, since material and size options were specified at the time of purchase.
Key Features
- Viton Impeller Housing O-Ring in Viton FKM fluoroelastomer built to the original factory specification
- Factory standard Viton FKM housing seal
- Shared across the KC range and the MSKC first stage
- 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 KC5.5, KC6, KC6H, KC7, KC8 and KC10 magnetic drive pumps and MSKC multistage pumps
- Acid, solvent and hydrocarbon duty on KC and MSKC pumps
- Routine wet end rebuild
- 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: J102389
- Part Type: Viton Impeller Housing O-Ring
- Material: Viton FKM fluoroelastomer
- Position: Impeller housing joint
- Fits: Finish Thompson KC5.5, KC6, KC6H, KC7, KC8 and KC10 magnetic drive pumps and MSKC multistage pumps
- Quantity Per Pump: 1
- Condition: New
Frequently Asked Questions
Q: Does a replacement ring need a torque check afterward?
The fasteners should be drawn down evenly in a cross pattern, then rechecked after the first run once the joint has settled.
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.
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 housing O-ring before you order.
CLRMarine
