This dual-wall heat shrink tubing features a durable polyolefin outer layer combined with a hot-melt adhesive inner liner that creates a secure environmental seal when heated.Designed to provide reliable electrical insulation, it helps protect wires, splices, and cable assemblies from moisture ingress, corrosion, abrasion, and other environmental contaminants. The flame-retardant construction enhances safety in demanding applications, while its operating temperature rating of up to 125°C makes it suitable for a wide range of marine, industrial and automotive electrical installations where long-term protection in harsh conditions and performance are required.