The part number 323-50500 is a heat shrinkable tubing made by HellermannTyton. It is a 4:1 medium wall adhesive lined length 1m 50/16 black. This tubing is designed to be used for insulation, strain relief, environmental protection, and conductor bundling. It can be used in a wide variety of applications and provides excellent electrical, mechanical, and chemical protection all in an easy-to-use format. It also features an internally applied adhesive lining, which helps improve environmental protection and ensures a tight, professional seal. The tubular shape helps with handling and installation, and it is also flame retardant. The insulation is provided by cross-linked polyolefin.