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Eas Split Seals for Process Applications

MECO's patented EAS seal is available for a variety of applications particularly pulpers, agitators, screw conveyors and mixers.

The EAS accommodates severe shaft runout and lends itself well to applications where mechanical packings and traditional mechanical seals fail to function. The seals are manufactured fully-split, in most cases permitting installation and rebuilding without removal or modification of the existing stuffing box, bearing, or drive.

The EAS's external adjustment feature permits field calibration of the seal without disassembly. As seal faces wear, the EAS can be adjusted to compensate, before significant leakage occurs. Monitoring the extent of adjustments permits planned maintenance, without catastrophic seal failures.

What's Inside...
The EAS is an unbalanced, double mechanical seal. The patented design places two rotating seal faces against a central driving elastomer. The elastomer turns with the shaft, and the two rotors turn with the elastomer. The elastomer provides a static seal against the shaft, motive force for the rotors, and serves as the load spring for the seal.

Wide radius faces permit the seal to accommodate anywhere from a standard 1/4" to 3/8" or more of total shaft runout. Split stationary faces are replaceable, making rebuilds simple and inexpensive.

A water flush trickles into the top of the seal cavity and out a vent at the bottom, (or side-to-side in vertical applications), providing cooling and expelling any stray material which might make its way past the primary seal face. While mechanical packing requires water leakage across the seal interface, the EAS does not, and flush water is confined to the area between the two seal rotors. Since the flush runs at zero pressure, no water leaks past the seal faces, and dilution cannot occur.

APPLICATIONS
The EAS is an outstanding seal, providing the runout tolerance necessary to resist deflection. Rugged stainless steel housings and rotors combine with high-performance bearing plastics to form an exceptionally-durable seal. Unlike delicate, hardfaced mechanical seals, EAS components can be freely handled, and even dropped without damage.

EAS seals are effective on horizontal agitators - on cantilevered shafts and older through shafts and agitator designs. The fully-split design allows installation and rebuilding without pulling the agitator drive.

MECO seals were originally developed for screw conveyors, and they still excel on stock washer repulper screws and on TMP chip conveyors. In addition to the EAS series, MECO's AH and MD-series seals have a variety of applications.

MECO EAS seals:

• Tolerate shaft runout and shock loads
• keep the media in your process machinery, and out of your recovery system
• Won't dilute stock or coatings
• Use less flush water than packed glands
• Can reduce agitator drive current drain
• Fully-split design speeds installation and rebuild
• Custom tailoring eliminates equipment modifications

END

Further Information
For further information relating to any of the above products, please contact Tony Snowdon on 0113 252 1061 or e-mail tonys@ftltech.co.uk