KingFlex 6mm-40mm thick Fire Retardant Nitrile Foam Insulation 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. It can be widely used in large-scale central and home air conditioning,construction, chemicals, textile and electrical industries. using health and safety, soft and beautiful appearance, easy to bend, convenient and quick construction, without other auxiliary materials. Normal 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).