Chesterton 442 Split Seal

Chesterton 442 Split Seal

High-Performance Seals Available in Large Diameters

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​The Chesterton 442 split seal is ideal for equipment that is difficult and time-consuming to disassemble, such as large pumps, vertical pumps, and horizontal split case pumps. This ​proven, compact design can be used in a wide variety of equipment and process fluids.​

The patented, high-performance split technology allows the 442 to operate from vacuum to high pressures.

  • ​Compact design allows for easy installation and a fit advantage on most equipment
  • Split, low-cost repair kits reduce ongoing maintenance costs even further
  • Designed with the installer in mind, the ball-and-socket O-Rings provide a quick and easy leak-free seal without the use of adhesives
  • Captive screws cannot fall out, making installation straightforward and reliable

1NSF version available upon request.


  • Fully split mechanical seal
  • Ball-and-socket O-Rings
  • Adjustable gland tabs
  • Patented, automatic centering
  • Patented, full-vacuum capability
  • Engineered for high pressure
  • Non-clog external springs
  • Non-fretting to equipment
  • Dry run capable
  • Large seal diameter options
  • Integral dual flushport​
  • Certified to NSF/ANSI 61​
SKU: Chesterton 442 Split Seal Category:
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Additional information