The MECO HB seal is the best choice in sealing technology for screw conveyors/scrolls, small blenders, bucket elevators, and similar rotating equipment used in bulk process industries. The HB is a full-contact, soft-face mechanical shaft seal, using an elastomer drive to rotate bearing-grade, synthetic seal faces against fixed, stainless steel seal faces. The HB is sized following standards of the Conveyor Equipment Manufacturers Association (C.E.M.A.) and their metric equivalents.

The HB Seal cavity is charged with low-pressure air/gas, which acts as a barrier fluid to provide pneumatic seal face loading. HB Seals ensure parallelism and flatness to maximize product containment and minimize barrier gas consumption. Alternatively, the HB seal may be reconfigured to operate without a barrier fluid, using a hose clamp to energize the seal faces. This is known as our “HC” variation.