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The BSC PREFERRED T987100S is a moisture and tear-resistant tape designed for weatherproofing, HVAC duct repairs, and general maintenance applications. Sold as a case of 24 rolls, this tape is built to hold up in demanding trade environments where sealing integrity matters. Its resistance to moisture makes it suitable for duct systems where condensation or humidity is a factor. HVAC technicians, building maintenance crews, and contractors reach for this tape when a reliable, durable seal is needed on duct surfaces and building envelope penetrations. This product is equivalent to part number S-377SIL.
The T987100S is suited for residential and light commercial HVAC work, including duct sealing, repair of duct wrap, and weatherproofing at penetrations and seams. It fits into standard HVAC maintenance workflows where a moisture-resistant, tough tape is required. The case quantity of 24 makes it practical for stocking service vans or supply rooms where tape consumption is regular. This tape falls under the adhesives category within hardware and building materials supply.
Equivalent to part number S-377SIL. Designed as a general-purpose HVAC duct repair and weatherproofing tape suitable for use in residential and light commercial duct systems and building envelope applications.
This tape is typically applied by HVAC technicians or maintenance contractors as part of duct sealing or weatherproofing work. Before application, ensure the surface is clean, dry, and free of dust or grease to achieve proper adhesion. Power down any HVAC system before accessing interior ductwork for repair. Follow applicable local mechanical codes and SMACNA guidelines when sealing duct joints and seams.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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