Jabsco 18753-0254EC Mechanical Seal Head, EPDM and Carbon
The Jabsco 18753-0254EC is the mechanical seal head in EPDM with a carbon rotary face, an alternative material version of the Jabsco 18753-0254 seal head. It lets you match the elastomer and face material to the liquid being pumped while keeping the same fit as the original. Jabsco uses this part number on specific models only, so match it against the parts list for the model number on your pump plate before ordering.
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
- Lapped sealing faces
- Stainless steel spring and retainer
- Elastomer bellows grips the shaft
- Stops leaks along the shaft
Applications
- 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: 18753-0254EC
- Part Type: Mechanical seal head only
- Rotary Face: Carbon
- Elastomer: EPDM
- Spring and Retainer: 18-8 stainless steel
- Size: Same as Jabsco 18753-0254
- Requires: Matching stationary seat
- Fits: Specific Jabsco models, confirm against your pump plate
- Quantity Needed: One per pump
- Condition: New
Frequently Asked Questions
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.
Q: How do I fit it without damage?
Keep the faces clean, handle them by the edges and lubricate the shaft lightly so the bellows slides on easily.
Q: Which face material should I choose?
Carbon suits clean liquids, while tungsten carbide and silicon carbide stand up better to abrasives.
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.
CLRMarine
