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Hutchinson Precision Sealing Systems
Group: Hutchinson
Catalog excerpts
Compounds for SF6 & replacement gases GAS INSULATED SWITCHGEARS In-house Manufacturing, Safe Sealing
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As a leading manufacturer of sealing solutions, Hutchinson provides standard and tailor-made O-Rings, X-Rings, Bonded Seals and special-shaped seals. The SF6 gas, widely used in gas-insulated switchgears (GIS) to extinguish the electrical arc, has a global warming potential 17.000 times higher than the one of CO2. The ecological urge brings the market to progressively replace the SF6 by gases based on CO2 or N2 with much smaller molecules. Common sealing materials such as CR, EPDM and NBR cannot be used anymore due to poor permeability values. In addition to a wide range of existing...
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