Underground Insulated Pipe

Flexsul-SealTM is an elastomeric thermal insulation used to retard heat loss in hot water plumbing and dual hot waterline systems. The Flexsul-Seal system is designed to trap dead air, within an expanded closed cell structure, thus increasing its total R-Value and reducing Heat loss in cold underground burial. Thermal performance is achieved by sealing the 2 5/8" centered air space, in effect reducing the flow of air and increasing the total R-Value of 6 by an additional factor of 5-9.


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