Kingflex foam ruber tube pipe insulation, Rubber as the main raw material ,no fiber ,non-formaldehyde, non-CFC and other ozone-depleting refrigerant ,can be directly exposed to the air, nor harm for human health. Standard product is black, It also efficiently reduces heat transfer for hot-water plumbing and liquid-heating and dual-temperature piping. It is ideal for applications in ductwork, dual temperature and low pressure steam line,process piping Air-conditioner, including hot gas piping. 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).