The new Pro-Series line is available in the Polyken® and Nashua® brands. According to the manufacturer, the line has been formulated and manufactured to provide a permanent airtight seal for all types of HVAC systems. The company states that the sealants dry quickly, are weatherproof, and are resistant to mold and mildew. The Pro-Series exceeds all SMACNA pressure and sealing classes, the manufacturer states. The company's water-based HVAC duct sealants are UL181A-M and UL-181B-M listed.

Tyco Adhesives, 1400 Providence Hwy., Norwood, MA 02062; 800-248-7659; www.tycoadhesives.com.

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