CSO (Corrosive Service Outside Mechanical Seal)

Single Rotary Seals
SEPCO’s CSO seal is engineered to handle corrosive applications. By taking all of the metal parts out of the fluid, the cost of expensive exotic alloys is eliminated.

Repairable in the Field: O-rings, springs and new seal faces can be installed in your own shop. This reduces costly inventory while providing consistency in performance of repaired seals.

Easily Installed: The CSO seal is not hidden in the stuffing box. It is right out front where you can get to is easily, with no fuss or aggravation. No installation measurements are required.

Easily Maintained: The faces can be examined for wear easily because they are out in the open. Seal faces can also be cleaned easily.

Springs Out of Fluid: The Hastelloy springs are isolated from the fluid, which eliminates corrosion and clogging.
Note: The unit is also available with a split ring for mounting on special sleeve materials. An optional metal band is also available.

Metal Parts:
Standard metal parts: 316 SS
Standard springs and drive pins: Hastelloy C
Standard set screws: 316 SS

Face Materials:
Standard Face: High quality carbon / graphite. High purity ceramic and SEPCO Carsil available in various sizes.
Standard O-ring Materials: Viton and EPR

Pressures: 150 p.s.i. (g) / 11 Kg/cm Maximum delta P

Temperatures: To 250°F / 121°C