To obtain a tight seal of the hood on the sabot by simple measures, particularly without a thread, the shell of the hood is designed with a sealing rim applying against {HEAD ~ a smooth annular zone} of {TAIL ~ the sabot} 
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To obtain a tight seal of the hood on the sabot by simple measures , particularly without a thread , the shell of the hood is designed with a sealing rim applying against { HEAD ~ a smooth annular zone } of { TAIL ~ the sabot }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL