Operating Limits

Pressure: up to 304 psi
  (Advise stuffing box pressure for quotation)

Temperature: -76 F to 464 F

Speed: 75.4 feet per second






View ST 400 SCH
Mechanical Seal Brochure

Balanced Single Cartridge Design
Runs at higher speeds, temperatures, and pressures.
The cartridge design makes installation much easier.

Unique Designed Stationary Face
Has series of holes to eliminate solidification of process.
Continuous lubrication film allows reliable sealing in
process such as Paint, Tar. Plastic, Corn Oil, & Sugar.

Pumping Screw Rotating Nose
Removes process away from the seal faces.

Unique Spring Design
Will allow run-out (whip) up to 0.118 thousands of an inch.

OPTIONAL LUBRICATOR TANK
The Lubricator Tank, when used with the 400 SCH provides the lubrication and cooling environment for the seal. When pressurized with compressed air, or nitrogen, the tank maintains the correct pressure balance that aids in the smooth circulation of the medium. The tank is mounted above, and relatively close to the installed seal. Water, Oil, and Glycol are common lubrication mediums. The alarm can be set to a low or high pressure range. The side pump can be used to manually increase the pressure in the system.