M23053/4 is composed of semi-rigid, flame retardant polyolefin heat shrink tubing. It is lined with a moisture proof sealant that provides a strong protective outer shrink jacket with a meltable inner wall. M23053/4 class 1 has a 3:1 shrink ratio and class 3 a 3:1. M23053/4 has an operating temperature -55°C to +110°C.
