Shurtape PC 857 Flex Duct Cloth Tape - 201885

Shurtape PC 857 Flex Duct Cloth Tape - 201885

Restore a strong seal on flexible duct seams with this universal/spec-match Shurtape PC 857 Flex Duct Cloth Tape - 201885. This UL 181B-FX listed printed cloth tape is designed for sealing, seaming, and joining Class 1 flex duct, including rougher field surfaces where reliable grip matters.

201885 is Shurtape PC 857 cloth duct tape, a universal/spec-match HVAC service tape used when flexible duct seams, collars, or patches need a listed cloth tape with strong hold and clean tearability. It is commonly used when older tape has dried out, pulled loose, or failed on a rougher surface.

Compatibility: Class 1 flex duct sealing, seaming, joining, and patching where a UL 181B-FX listed cloth tape with the correct width and adhesion profile is required.

Please confirm the tape width, length, backing material, adhesive type, and service application before ordering.

Is it time to replace?

• Common Symptoms: Loose duct seams, tape failure on rough surfaces, air leakage around collars, or a field patch that no longer stays closed.
• Visible/Sensory Cues: Lifted corners, dried or frayed cloth backing, separation at a flex duct seam, or dust tracks that suggest air escaping from the joint.

Pro Tip: Apply the tape to a clean surface and rub it down firmly around the full circumference of the joint so the cloth backing stays fully anchored.

Technical Specifications