K-Flex Insul tube is a flexible, closed cell elastomeric tube insulation product used to conserve energy and prevent condensation on piping applications. The product's closed cell structure creates exceptional thermal properties (k-value of 0.245 at 75 deg F and wvt of 0.03 perm-in) that protect against moisture penetration in applications within a -297 to 220 deg F temperature range. K-Flex Insul tube is widely used for its cold weather flexibility, durable skin surface, exacting manufacturing tolerances and lasting performance.

K-Flex INSUL-TUBE® Pipe Insulation, 3-5/8 x 3-1/2 in Nominal, 3-5/8 in Inside Diameter, 4-5/8 in Outside Diameter, 1/2 in Wall Thickness, R-Value: R3.2, -297 to 220 deg F, CTS x CTS Connection, NBR/PVC, Black, 6 ft Length, Domestic/Import: Domestic

• Insulated tube pipe insulation is an elastomeric material that helps retard heat loss, prevents condensation and provides effective moisture vapor resistance
• Environmentally friendly, CFC-free, mold-and mildew-resistant, fiber-free, and nondusting
• Can be used in underground applications above the water table
• Seal before back filling
• Unslit tubing can be slit lengthwise and fit over existing pipes
• Less than 7% linear shrinkage dimensional stability
• Less than 0.01 perm in water vapor permeability