Silicone ducting hose

SIL-Duct is a two-ply smooth silicone-coated polyester fabric ducting hose with helical spring steel wire.

It is well suited for high- and low-temperature applications up to 600 F and provides superior air flow and miniumum  friction loss. Available from Kuriyama of America in 1-inch through 8-inch ID sizes and is shipped in 12-foot lengths in cartons.