... free and resistant to mold and mildew.Features:1. Low and stable Thermal conductivity2. High moisture ... : 1.16*10Thermal conductivity values: 0.036w/mkFire performance with BS 476 Class0 and class 1Rubber ... Insulation Tube's sepecification: wall thickness (normal)in(mm)1/4",3/8",1/2",3/4",1",1-1/4",1-1 ... /2",2"(6,9,13,19,25,32,40,50)inside diameterin(mm)1 ...