Packing Cases

Custom-Engineered Solutions

Cook Compression offers custom-engineered packing cases for any gas composition, at pressures ranging from vacuum to 50,000 psi (3,450 bar), in lubricated or non-lubricated service.

Advanced designs meet materials expertise to address your specific application needs. Features for venting and purging of gas are combined with specialty rings, control systems and/or standby seals to create high-performance emissions solutions.

Patented Low-Friction™ technology for purge and vent seals lowers rod temperatures and extends seal life. API 618-compliant cooled packing cases provide highly efficient heat transfer, as well as reduced leakage.

LF Purge Pac, Static-Pac and Vortex Cooling assemblies for packing cases
Compressor packing case collection

Packing Case Design

Each Cook packing case consists of a flange and a series of annular cups containing recesses for the packing rings. The type and material of the rings varies based on service conditions.

For up to about 2,000 psi (140 bar), the case material is normally cast iron, or Ni-Resist iron if the application involves corrosive gases. Steel or stainless steel is most common for higher pressures.

Specialty Designs

Static-Pac assembly

Static-Pac® Shutdown Seal

Prevent the escape of high-pressure gas from the packing case assembly during and after compressor shutdown.
Vortex Cooling packing cup 3D model

Vortex Cooling® Packing

Improve heat transfer and extend sealing component life with a cooled packing case design fully compliant with API 618, 5th edition.
Cook CLEAN packing case 3D model

COOK CLEAN Purged Packing

Choose the industry leader in purged packing systems and emissions control, equipped with condition monitoring for predictive maintenance.
LF Purge Pac assembly

LF Purge Pac® Assembly

Achieve a virtually leak-proof chamber for the purge or buffer medium while reducing rod temperatures for longer packing case life.
LF Vent Pac assembly

LF Vent Pac® Assembly

Maximize vent sealing while extending the service life of your seal rings and packing case.

Cook Compression Advantage

  • Material options for all gases and pressure conditions, backed by in-house materials development
  • Custom-engineered packing designed especially for your application
  • Advanced hyper sealing components
  • Cases for non-lubricated service
  • Emissions-reduction options