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