The HH Type-2 is often used for applications with intermediate process temperatures or applications with abrasive product. It is best suited for applications with infrequent, or no thermal expansion. The HH Type-2 can be used on horizontal, inclined, and vertical shafts. Several common machines and process material applications are listed to the right.

MECO’s HH Type-2 is custom-engineered and manufactured to fit the needs of each application. Shaft sizes typically range from 1” (25 mm) to 12” (305 mm) and MECO engineers can accommodate most mounting arrangements.

The HH Type-2 seal is available in a variety of materials. The most common materials are listed below, but alternative materials are available upon request. Contact MECO with your specific application requirements for a custom solution.

The HH Type-2’s sealing performance can be easily monitored by maintenance and production personnel using the
seal’s pressure gauge system. The pressure gauge system is effective in quickly alerting maintenance and production
personnel of a potential seal breach so that adjustments or repairs can be made before product leakage occurs.
Natural wear of the rotating seal faces that result in decreased seal face pressure can be accounted for by tightening
the HH Type-2’s adjusting clamp. The adjusting clamp is accessible through an adjustment port in the seal’s outer
diameter. Fully split rebuild kits are available if the seal’s components are worn further than can be corrected
by adjustments.

MECO specializes in custom engineered seals designed for the particulars of each specific application. The mechanical
capabilities of the HH Type-2 are dependent on the materials and processes involved in the application. MECO has a
range of other seal models that may be more applicable if the HH Type-2 isn’t a good fit for your application.