Langdon's Sure•Seal Spiral is a single wall self-sealing spiral ductwork system that reduces installation cost. Our new gasketed connection is quick and easy. No messy sealer is required, simply slide the pieces together and secure with gasketed tek screw fasteners #10-16-3/4. Self sealing spiral will give you a finished look for exposed areas. Our patented gasket is a dual lipped profile of EPDM rubber that has been tested (using Langdon's manufactured spiral pipe) from Negative 2" W.G. to Positive 10" W.G. achieving a Class 3 seal rating in accordance with SMACNA HVAC Air Duct Leakage Test Manual (first edition 1985). The EPDM gaskets thermal properties are suitable for use in applications from 200°F to -20°F. Sure•Seal Spiral is available in single wall and double wall in even sizes from 4" to 30" diameter, 26 gauge to 22 gauge in galvanized, galvanneal, stainless steel, aluminum and polyvinyl chloride duct (PCD).
For more details click on link below to download a copy of our Shop Drawing
Also Available in PCD 4X4