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Chesterton - Model 442 -Split Mechanical Seal
The 442 Split Mechanical 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 high performance split technology allows the 442 to operate from vacuum to high pressures. Its 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 seal without the use of adhesives. Captive screws cannot fall out, making installation straightforward and reliable.
- Easy and fast to install without equipment disassembly
- Proven design with superior performance
- Non-fretting to equipment
- Compact design
- Variants: Mixer version available
- Size Range: 25 mm to 915 mm (1 inch to 36 inch )
- Standards and Approvals: ISO-3069-S, ASME B73.1, ASME B73.2, NSF61, ACS, ATEX
Materials
- Springs: Elgiloy®
- Faces: CB, RSC, CR
- Metals: 316SS, EN 1.4401, Other Metallurgies available on request
Operating Conditions
- Pressure Limit Vacuum: 711 mm Hg Vacuum ( 28 in Hg vacuum )
- Pressure Limit Rotating: 450 PSIg ( 30 BARg )
- Speed Max: 20 m/s ( 4000 fpm )
- Temperature Max: 250 °F ( 120 °C )
Notes:
Seal pressure capabilities are dependent on the fluid sealed, temperature, speed, and seal face combinations. For operation outside the limits and additional materials consult Chesterton Mechanical Seal Engineering.