Insulcap is used seal the ends of all types of Cables & protect from ingress of water / moisture. The caps are manufactured from high quality cross linked polyolefin material. Compatible with most commonly used Cable Jackets i.e. XLPE, PVC, PILC OR Rubber Sheathed Cable. Hot Melt adhesive lining provides permanent seal on irregular cable sheaths. https://www.galathermo.com/heat_shrink_end_caps/cable_end_sealing_caps/cable_end_sealing_caps.html