Yanmar 24341-000850 O-Ring
The Yanmar 24341-000850 is the genuine o-ring for Yanmar marine diesel sea water pumps that use this part. It seals a joint in the raw water pump: squeezed into its groove when the joint is closed, it is the only thing keeping sea water where it belongs.
O-rings fail predictably. Heat and time take the flexibility out of the rubber, the ring takes a permanent set in the shape of its groove, and it stops pushing back against the surfaces it seals. On a raw water pump the consequence is either a leak to the outside, which is obvious, or air drawn in on the suction side, which is not obvious at all - the pump simply stops making the flow it used to.
Key Features
- Genuine Yanmar replacement o-ring
- Fits Yanmar marine diesel sea water pumps that use this part
- One per pump
- Restores a positive seal at the joint
- Prevents both leaks and air being drawn in on the suction side
- Inexpensive part worth renewing whenever the joint is opened
Applications
- Yanmar marine diesel sea water pumps that use this part
- Raw water pump rebuilds and impeller changes
- Curing a leak or a weep at a pump joint
- Tracing air drawn into the suction side
- Reassembly after any joint in the pump is opened
- Spring commissioning and layup service
Specifications
- Brand: Yanmar
- Manufacturer: Yanmar Marine
- Manufacturer Part Number: 24341-000850
- Part Type: O-Ring
- Fits: Yanmar marine diesel sea water pumps that use this part
- Quantity Used: One per pump
- Condition: New
Frequently Asked Questions
Q: Can I reuse an O-ring that looks fine?
It is a false economy. A ring compressed for a season has taken a set in its groove and no longer springs back, and it will often seal on the bench and leak once the engine is running.
Q: The pump does not leak but the flow has dropped. Could a seal be responsible?
Yes. A seal on the suction side lets air in rather than water out, so there is nothing to see while the pump quietly loses its ability to prime and pull.
Q: How do I avoid damaging the new ring?
Use a plastic or brass pick on the old one, clean the groove so nothing is trapped underneath, and lubricate the new ring lightly before closing the joint.
Q: Should I replace all the pump seals at once?
If the pump is open, yes. They have all seen the same hours and the same water, and reaching them is most of the work.
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 o-ring.
CLRMarine
