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Interlock Flex Hose


TFL-SSS Interlock Flex Hose is a high-performing interlock product that is low leak, delivering better fatigue life than standard interlock. It is designed for use post-treatment system to transfer treated exhaust to the exhaust stack.

        On- and off-highway commercial vehicle exhaust systems and use post-treatment system for:
        • Buses
        • Trucks
        • Tractors
        • Military
        • Construction
        • Forestry
        • Marine
        • Power generation

Available Sizes
          • Inside diameters: 2.5”–6” (63.5mm–152.4mm)
Material specifications
          • Type 304 stainless steel (1.4301)
          • Others per customer specification


TFA Interlock Flex Hose is both cost effective and durable. It is designed for use post-treatment system to transfer the treated exhaust to the exhaust stack.

Available Sizes
              • Inside diameter: 2.5”–6” (63.5mm–152.4mm)
Material specification
              • Aluminized
              • Galvanized
              • Type 304 stainless steel (1.4301)
              • Type 321 stainless steel (1.4541)
              • Type 409 stainless steel (1.4512)
              • Others per customer specification

Standard Interlock

Standard Interlock Flex Hose is a single interlocking strip of metal spirally wound to form a durable, standard-bore, flexible hose. Depending upon the material used, packing, and strip thickness, a standard bore metal hose can operate in temperatures ranging from -100° F to +1200° F.

Available Sizes
              • Inside diameter: .75″–20″
Material specifications
              • Electro-galvanized
              • Hot-dipped galvanized
              • Aluminized
              • Type 304 stainless steel (1.4301)
              • Aluminum
              • Tin plate


Poly-Flex® Interlocked Flex Hose is uniquely designed so it will not unwind when cut. This self-cleaning hose maintains flexibility longer than competitive products and can be field cut by any means. It will not unwind and does not require spot welding to hold in place.

Available Sizes
              • Inside diameter: 2”–8” (50.8mm–203.2mm)
              • Standard coil length: 25 feet
Material specifications
            • Galvanized or stainless steel

Tru-Flex, LLC
2391 S. St. Rd. 263 / P.O. Box 247
West Lebanon, Indiana 47991

1-800-255-6291 or (765) 893-4403