1.1 These requirements cover pressure-sensitive tapes, mastic systems, and non-metallic mechanical fasteners for use as a part of the closure system of factory-made flexible air ducts or air connectors complying with the Standard for Factory-Made Air Ducts and Air Connectors, UL 181.
1 .2 These requirements cover only pressure-sensitive tapes intended for use at the core to fitting attachment and at the outer moisture barrier. When used at the core to fitting attachment, a mechanical fastener shall be installed over the tape. The tape shall be employed at this location such that it does not disrupt the connection of the mechanical fastener. When tape is used at the outer moisture barrier,mechanical fasteners may or may not be employed.
