| http://www.w3.org/ns/prov#value | - 20080231000Trapezoid-Sectional Annular Thermally-Assisted Sealing Arrangement - A trapezoid-sectional annular sealing arrangement, including a trapezoid-sectional annular cavity and gasket or packing used to realize the sealing connection of two fluid-containing members connected by fastening threads or bolts, wherein the said annular gasket or packing is enclosed in the said annular cavity formed
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