Fits copper or iron pipes. Insulation is high efficiency and easily to installed. It is ozone friendly. View More. Frost King 0.75-in x 6-ft Foam Plumbing Tubular Pipe Insulation. Self sealing pipe insulation is used to retard heat loss on hot water pipes and to prevent freezing of all water pipes. It is ideal for residential applications, but High-Temperature Insulation McMaster-CarrHigh-Strength Basalt Pipe Insulation Superior in strength and durability, these thin strips insulate as well as protect personnel from accidental contact with hot pipes. Use for exhaust, hot water, and process pipes.