Such a clamping can be accomplished, for example, by deforming the first part 2 or by {HEAD ~ a corresponding spreading} of deformable wall parts of the first part 2 or of corresponding parts of {TAIL ~ the main closure} 
Such a clamping can be accomplished , for example , by deforming the first part 2 or by { HEAD ~ a corresponding spreading } of deformable wall parts of the first part 2 or of corresponding parts of { TAIL ~ the main closure }
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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL