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 1/8" self-tapping gasketed screws. Our patented gasket is a dual lipped profile of EPD 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 gasket material is suitable for use in applications ranging in temperature from 200°F down to -20°F. Our self sealing spiral will give you a finished look for exposed areas. Sure•Seal Spiral is available in galvanized, galvanneal, stainless steel and aluminum in even sizes from 4" to 20".
For more details click on link below to download a copy of our Shop Drawing
Also Available in PCD 4X4