Jabsco 18753-0250 Mechanical Seal Head, FKM and Carbon
The Jabsco 18753-0250 is a genuine Jabsco mechanical seal head with a carbon rotary face and FKM elastomers, an 18-8 stainless steel retainer and an 18-8 stainless steel spring. It is a compact, single spring, bi-directional elastomer bellows seal. This is the seal head only and it pairs with the matching stationary seat. It is listed for Jabsco 30530 series industrial flexible impeller pumps.
A mechanical seal stops liquid leaking along the turning shaft by running a rotating face against a stationary seat. The two faces are lapped very flat, so handle them by the edges, keep them clean and never let the pump run dry, because the faces rely on the liquid for cooling and lubrication. Replace the seal head and seat as a matched pair, and check the shaft for wear or scoring where the elastomer grips it.
Key Features
- Mechanical shaft seal
- Listed for 30530 Series Pumps
- Lapped sealing faces
- Stainless steel spring and retainer
- Elastomer bellows grips the shaft
- Stops leaks along the shaft
Applications
- Jabsco 30530 Series Pumps
- Jabsco industrial flexible impeller pumps
- Replacing a leaking shaft seal
- Chemical and process transfer
- Food, beverage and general transfer
- Pump overhauls
Specifications
- Brand: Jabsco
- Manufacturer Part Number: 18753-0250
- Part Type: Mechanical seal head only
- Rotary Face: Carbon
- Elastomer: FKM
- Spring and Retainer: 18-8 stainless steel
- Requires: Matching stationary seat
- Fits: Jabsco 30530 series industrial flexible impeller pumps
- Quantity Needed: One per pump
- Condition: New
Frequently Asked Questions
Q: Which face material should I choose?
Carbon suits clean liquids, while tungsten carbide and silicon carbide stand up better to abrasives.
Q: Which elastomer should I choose?
Nitrile suits oils, FKM suits many chemicals and heat, and EPDM suits hot water and many cleaners.
Q: Do I need a new seat as well?
Yes. The head and the seat wear together and should be replaced as a pair.
Q: Why do mechanical seals fail?
Running dry, grit in the liquid and a worn or scored shaft are the most common causes.
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 mechanical seal.
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