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