Pipe Insulation

Closed-cell foam pipe insulation for refrigerant suction lines, chilled water and condensate piping — Armacell AP Armaflex, K-Flex, Aeroflex and more, in every standard ID and wall thickness. Every listing shows the nominal pipe size it fits and the insulation value.

Size by the pipe or tube OD you're covering, not the insulation's outer dimension. For refrigerant suction lines, 3/4-inch wall is the common spec in hot, humid climates; 1/2-inch elsewhere — check your local code.