Self-Seal Insulation Rubber 2-1/8 x 1

Self-Seal Insulation Insulation Material EPDM Installation Style Slit with Adhesive and Flap Inside Diameter 2 in Wall Thickness 1 in Overall Length 6 ft Minimum Operating Temperature -297 Degrees F Maximum Operating Temperature 257 Degrees F Facing Material Unfaced Color Black R Value 5.9 Form Tube For Copper Tube Size 2 1/8 in Flame Spread Index 25 Smoke Developed Index 50 Foam Cell Type Closed Plenum Rating Plenum Rated Flexibility Flexible For Tube Outside Diameter 2 1/8 in