McGill AirFlow, Groveport, Ohio, has introduced its new "Uni-Gasket", a single-leg EPDM gasket that provides a reliable, airtight seal based on technology used successfully in Europe for years. McGill's Wayne Custer said a company called Flakt in Europe has 25 years of experience in using this product, and McGill has imported that technology for use here in America.
Testing has shown that this design meets or exceeds SMACNA's Class 3 for leakage (-20 inches wg to +20 inches wg). The new fittings are available as round elbows, couplings, reducers, and taps in diameters of three through 24 inches. Galvanized steel construction meets SMACNA's +10-inch wg positive pressure standard, and are compatible with all of McGill AirFlow's round, single-wall duct types.