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