For example, in {HEAD ~ the case} of an insulator which is assembled from a glass fibre rod surrounded by a flexible polymeric housing including a number of {TAIL ~ sheds}, the barriers may be formed integrally with, or fitted to, the sheds prior to final assembly of the insulator 
For example , in { HEAD ~ the case } of an insulator which is assembled from a glass fibre rod surrounded by a flexible polymeric housing including a number of { TAIL ~ sheds } , the barriers may be formed integrally with , or fitted to , the sheds prior to final assembly of the insulator
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH