Shaft seals keep vapour and powders in check
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Meco Shaft Seals product story
Edited by the Engineeringtalk editorial team
Jul 25, 2005
Ex-Pac shaft seals reliably contain resin and additive powders and hydrocarbon vapours in both single and twin shaft polyolefin extruder-compounders.
Meco's Ex-Pac shaft seals reliably contain resin and additive powders and hydrocarbon vapours in both single and twin shaft polyolefin extruder-compounders.
These nitrogen-purged seals are self-adjusting and designed to accommodate shaft deflection and temperatures approaching 260C.
Seals are custom-engineered to be effective in applications where there is extensive thermal growth of the shaft, or where axial shaft movements are occasionally necessary for adjusting machine clearances.
Meco seals are fully split to allow fast retrofits and rebuilds without removal of screw shafts.
The Ex-Pac uses a massive housing similar to a stuffing box, containing rotating components which use the traditional Meco elastomeric drive, or in some cases the patented Meco-Dr positive drive system.
The Meco-Dr system can be constructed without elastomers, where chemical environments dictate.
The purge chamber between the two rotating faces is maintained by a tight-fitting O-ring around the nose of a gland follower, which in turn compresses the double seal faces.
Ex-Pac seals can be equipped with traditional manual adjustment, or they can be loaded with external springs to compensate for normal wear of the sacrificial seal surfaces.
Meco's unique, patented seal designs also prevent leakage and shaft damage on upstream equipment such as screw feeders, dryers and conveyors, prolonging machinery life and reducing downtime.
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Contact Meco Shaft Seals
Tel +1 207 371 2210
Other Meco Shaft Seals stories
-
Meco launches HB standard-sized seals
Meco Shaft Seals has announced the launch of the HB range of standard-sized seals for screw conveyors and similar equipment. -
Meco seals solve contamination and vacuum issues
Meco Shaft Seals has revealed how its Meco-DR shaft seals can solve contamination and vacuum problems in drying applications. -
Meco shaft seals take stand at POWTEX
Meco custom-engineered shaft seals will be on exhibit at the 17th International Powder Technology Exhibition (POWTEX) in Tokyo on 28-31 October 2008. -
Air-purged seals clear caramelised sugar
Unlike traditional mechanical seals, MECO seal faces are soft, fault-tolerant and almost impossible to break. -
Seal upgrades meet ATEX requirements
Meco has adapted two of its seal designs to comply with ATEX, which considers packing glands unsuitable for service in potentially explosive atmospheres
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