Standard Screw Conveyor Seals

MECO shaft seals have revolutionized screw conveyor sealing. Screw conveyors exhibit almost universal leakage problems, due to the shaft runout and whip caused by their long, unsupported spans of flighting.

Original, elastomer-driven MECO seals, with their large-radius sealing faces, tolerate up to 1/4" of diametric runout. The elastomeric drive is flexible, absorbing shocks without compromising the seal faces. This simple, robust, tolerant seal is effective with dry powders, pastes, slurries, fluids, vapors and gases. Air-purged and unpurged versions are available.

The "H" (unpurged) and "HE" (air-purged) series are the original Meco screw conveyor seals. First patented by Meco in 1976, this enduring design is still used extensively for screw conveyor applications.

This series begins with an H-shaped elastomer ring, which surrounds the shaft. Each end of the ring bears against a flat, rotating seal face, and these faces, in turn, bear against flat, stationary faces. An adjustable clamp, fastened around the middle of the elastomer ring, permits the seal faces to be tightened or loosened.

The "H" resides in an open housing. If leakage past the first seal face occurs, product will drop out of the seal and alert operators to the need for adjustment. "HE" seals incorporate a body block which permits an air purge to be introduced between the two seal faces, creating a more durable seal.

"H/HE" series seals

MECO standard screw conveyor seals are available for six, Conveying Equipment Manufacturers' Association standard sizes, from 1" through 3 7/16". MECO Custom Shaft Seals are available for other conveyor shaft sizes, as well as for mixers, blenders, dryers, airlocks, extruders, agitators and a wide variety of other process equipment.

Beware of cheap imitations!

Although cheap copies of the MECO® design are being sold by others, the copies are not backed by MECO's experienced, technical support staff. No screw conveyor seal available can match the quality and customer support associated with genuine, MECO seals.

Product Literature
(Including Dimensions & Pricing)

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Revised 25 March, 2005 Stark