The 308-32400 is a black Heat Shrink Tubing made of thin-wall cross-linked polyolefin and offers 3:1 shrink ratio. The HIS-3-24/8 PO-X BK 3 tubing is used in general purpose of electrical insulation with a high level of protection against corrosion and mechanical abrasion. The tubing forms a seal against moisture and protects against corrosion, mechanical abrasion and replaces many differently sized tubing solutions by fitting almost any heat shrink task.