Chesterton’s 442M Split Mechanical Seal

The 442M provides the sealing capability of traditional mechanical seals without the need to disassemble and realign the pump. All parts are split to slip around the shaft and assemble in place. The 442 seal is a dramatic time saver with fast, easy installation, plus it can be rebuilt quickly and easily. Downtime is minimized and driver/equipment alignment is eliminated.

Main Features:

• Fast, easy installation without the need for pump disassembly.
• Fast, economical and easy rebuild of seal in the field eliminates the need for a spare seal.
• The 442M avoids equipment dis-assembly during seal change.
• Designed to handle the high runout conditions of mixers and agitators.
• Patented automatic centering.
• Exclusive design features ensure maximum performance.
• Compact seal design occupies minimum space.
• The ultimate split seal for mixers, agitators and specialty equipment .
• ISO 9001 CERTIFIED

Chesterton’s 442M Split Mechanical Seal

• External springs are non-clogging and act as a wear gauge.
• Double captured gland and holder gaskets resist extrusion.
• Narrow face rotates to minimize wiping effect.
• Patented centering buttons provide automatic centering and are FDA approved for sanitary conditions.
• Captive shaft O-ring makes installation simple.
• Dual flush ports allow piping from either side.
• Designed specifically with high-runout equipment in mind
• Split design allows quick, economical installation without equipment disassembly.
• Economical repair kits allow the seal to be field refurbished
• 442M split mixer seal is specifically designed to reliably perform in services which routinely exhibit large amounts of radial shaft runout.
• Large internal clearances allow radial shaft movement without damaging seal components.
• Patented Automatic Centering Maximum radial runout performance demands perfect centering.
• Unique centering "buttons" positively center the gland about the rotating element. This ensures maximum radial travel in all directions. Face "Wiping" is minimized in rotating narrow face designs, if the equipment shaft is not concentric to the stuffing box bore, particles are prevented from being transported across seal face wear track due to the wiping action created. The  lapped seal faces are nprotected from damage.