It is a general-purpose Extruded Medium Wall Tubing With Hot Melt Adhesive Lined supplied with (co-extruded) or without adhesive coating. It is used for cable outer sheath replacement, sealing and corrosion protection or uncoated as an insulating material or protective cover for LV & MV Cables. https://thepcatech.com/product/extruded-medium-wall-tubing-wth-hot-melt-adhesive-lined/