Pipe Insulation,Insulation Material Polyethylene,Installation Style Semi-Slit,Inside Diameter 5/8 in,Wall Thickness 3/4 in,Overall Length 6 ft,Minimum Operating Temperature -160 Degrees F,Maximum Operating Temperature 200 Degrees F,Facing Material Unfaced,Color Black,R Value 5.3,Form Tube,For Copper Tube Size 1/2 in,For Pipe Size 3/8 in,Flame Spread Index 25,Smoke Developed Index 50,Foam Cell Type Closed,Plenum Rating Plenum Rated,Flexibility Flexible