Kingflex NBR Elastomeric Insulation Rubber Foam Tube adopts high-performance NBR/PVC as the main raw material with various quality supplementary material by special frothing process to produce the soft energy conversation foam insulation. It has closed cell construction and has many great features such as soft resistance refractive index, cold resistance, fire-retardant, waterproof, low thermal conductivity , shock and sound absorption and so on. It can be widely used in large-scale central and home air conditioning,construction, chemicals, textile and electrical industries. Nominal wall thicknesses of 1/4”, 3/8″, 1/2″, 3/4″,1″, 1-1/4”, 1-1/2″ and 2” (6, 9, 13, 19, 25 , 32, 40 and 50mm). Standard Length with 6ft (1.83m) or 6.2ft(2m).