Heat shrink in sri lanka also known as heat shrink, heatshrinks and thermal shrink wrap is a shrinkable tube used to insulate electrical wires. It protect the open areas of wires by humidity, rain, heat and other low level conditions. Heat shrink tubing is made with polyolefin which shrinks radially, some polyolefin heat shrink tubing are made from various mixed materials to withstand harsh conditions. Some electrical heat shrink comes with very thin tubs for easy installation, there are used in small circuits and units. Large gauge wrap around heat shrink are used in heavy wiring and sealing connect ends. wire shrink wrap in sri lanka lanka have wide range of ratings from large expansion rates to small expansion rates. Silicone lubricant can be applied to the inside of most of the heat shrink tubing in sri lanka, they provide additional tightness and flexibility. Overheated heat sink sleeves will melt or catch on fire. Kumarasinghe Radio carries large inventory of best heat shrink available wholesale and retail in our shops in pettah and buy online. Rubber heat shrink sleeves can be used with wide range of glue. Battery shrink wrap can be replaced with waterproof rubber heat shrink sleeving, some of these wraps comes with soft flexible cord types and others used highly density but short sleeves. Usually polyolefin shrinkage ratio is 2:1.