Product category:
Seals
News Release from: Meco Shaft Seals | Subject: Ex-Pac-type shaft seals
Edited by the Engineeringtalk Editorial
Team on 25 July 2005
Shaft seals keep vapour and powders in
check
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
This article was originally published on Engineeringtalk on 3 Sep 2002 at 8.00am (UK)
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Meco AH-series custom seals are designed to simplify installation, routine cleaning and maintenance.
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. Request a free brochure from Meco Shaft Seals ...
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