TE Connectivity (TE) Raychem medium wall, heat shrinkable BPTM tubing provides insulation enhancement and protection against flashover and accidentally induced discharge. Particularly useful in confined spaces BPTM tubing can be used on both circular and rectangular copper or aluminum busbars. On application of heat the tubing shrinks snugly over the busbar profile ensuring that the required minimum wall thickness is obtained. Raychem BPTM tubing can be installed easily during large scale production using an oven or in the field using a gas torch or hot air. Raychem BPTM tubing is manufactured from a non-halogen based polymer which has excellent performance in high voltage environments and greatly reduces the noxious and corrosive effects in fire situations.