External abrasion-resistant Flexaust Flex-Lok SF Series has up to 10:1 compressibility. Constructed of mechanically crimped silicone silver fiberglass fabric, hose comes in single- and two-ply versions withstanding temperatures to 550 and 600°F respectively. It is available in sizes from 3-18 in. ID and standard 25 ft lengths. ET version is offered for use up to 1,050°F.