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.
