F221B3/4 BK203 — 2:1 Heat Shrink Tubing from Alpha

Alpha F221B3/4 BK203 is a black 2:1 heat shrink tubing made from durable cross-linked polyolefin (XLPO), designed to perform in temperatures from -55C to 135C. With a nominal inner diameter of 0.75 inches that recovers to 0.375 inches, it offers reliable insulation and protection for medium wiring and cable assemblies. This tubing meets strict standards including CA Prop 65, CSA 198, UL 224, and AMS DTL-23053_5 CL 1 & 2. Ideal for aerospace, automotive, and industrial applications requiring durable, heat-resistant tubing solutions.