2-CS Reducer Bushings

The Sentry 2-CS Reducer bushing is the simplest of the secondary seal assemblies. It consists of reducer bushing body, (2) CS Seals in the I.D. of the bushing and a snap ring for retaining the bushing in the secondary seal area of a casing spool or tubing head.

• This design consists of two “CS” seals located in grooves in the I.D. of the reducer bushing body
• A seal is achieved by interference of the seal with the outside diameter of the casing and the I.D. of the seal groove
• A spring molded in each ID corner of the seal provides the anti‑extrusion mechanism when sealing against the casing O.D
• The shape of the seal allows it flexibility to maintain interference with normal manufactured tolerances of the casing O.D
• Is utilized in the bottom of a casing spool or tubing head that already has (2) “CS” seals in the secondary seal area