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