Pipe Insulation, Insulation Material Buna-N Rubber/PVC, Installation Style Slit with Adhesive and Flap, Inside Diameter 7/8 in, Wall Thickness 1 in, Overall Length 6 ft, Minimum Operating Temperature -70 Degrees F, Maximum Operating Temperature 220 Degrees F, Facing Material Unfaced, Color Black, R Value 7.2, Form Tube, For Copper Tube Size 7/8 in, For Pipe Size 1/2 in, Flame Spread Index 89, Smoke Developed Index 114, Foam Cell Type Closed, Plenum Rating Plenum Rated, Flexibility Flexible