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feature details 1)Excellent fire resistance properties When fire tested,K-Flex achieves the fire performance requirements of Class 1 to British Standard BS 476 pART 7 1997 . 2)High water vapour diffusion resistance K-Flex closed cell elastomeric insulation has a high water vapour diffusion resistance factor that minimiaes water vapour penetration,giving excellent long term performance. 3)Very low thermal conductivty when mean temperature is 0C,K-Flex thermal conductivity is λ/0=0.035W/(m.K).When mean temperature is -20C, it is equal or less than 0.033 W/(m.k) ,when temperature is 20C ,it is equal or less than 0.037W/(m.k) .The thermal conductivty coefficient is the most inportant factor in calculation focused on energy saving. 4)working temperature : -200C-+105C 5)water vapor diffusion reistance: it is equal or more than 10000. 6)flexibility: good 7)resistance to U.V:ok 8)resistance to oil and greases: good 9)resistance to mildew: it is suitable in no mildew environment. deimension 1. Tube Type - Available Thickness: 9, 13, 19, 25, 32mm. - Available Inside Diameter (I. D. ): 1) By mm unit 10, 13, 16, 19, 22, 25, 28, 32, 35, 38, 42, 45, 48, 54, 57, 60, 67, 76, 89. 2) By inch 1 / 4, 3 / 8, 1 / 2, 5 / 8, 3 / 4, 7 / 8, 1, 11 / 8, 11 / 4, 13 / 8, 11 / 2, 15 / 8, 13 / 4, 17 / 8, 21 / 8, 21 / 4, 23 / 8, 25 / 8, 3, 31 / 2. 2. Sheet Type 1) Width: 1m 2) Thickness: 6, 9, 13, 19, 25, 32mm.