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Cloth & Duct Tapes

PC 857

PC 857 UL 181B-FX Listed/Printed Cloth Duct Tape

UL 181B-FX Listed and printed cloth duct tape used in the HVAC industry to seal, seam and join Class 1 Flex Duct, even when surfaces are rougher or not fully clean. Offering high holding power, superior shear strength and excellent tearability, PC 857 is recommended for applications in which the tensile strength and adhesion to stainless steel and polyethylene must meet or exceed the strict requirements of UL, flex duct manufacturers and city and state codes.

Features & Benefits

  • Printed cloth duct tape
  • UL 181B-FX Listed - clearly printed on the tape for quick identification
  • High holding power
  • Superior shear strength
  • Easy to tear

Related Products

PC 858

CEC approved, UL 181B-FX Listed and printed cloth duct tape for Class 1 Flex Duct.

Typical Applications

    Used in the HVAC industry to seal, seam and join Class 1 Flex Duct



  • Backing: Waterproof polyethylene film with a cloth carrier
  • Adhesive: Synthetic rubber blend adhesive
  • Liner: NA

Properties & Technical Data

Property Standard Metric
Adhesion to Stainless Steel 70 oz/in width 7.66 N/10 mm
Elongation 10% 10%
Service Temperature Range 50 F to 212 F 10 C to 100 C
Tensile 27 lbs/in width 47.3 N/10 mm
Thickness 14.0 mils 0.36 mm

Physical and performance characteristics shown above are obtained from tests recommended by PSTC, ASTM, government agencies or Shurtape Technologies, LLC, Quality Assurance and Technical Service departments and do not represent a guarantee of product performance. Individual rolls may vary slightly from these averages. The user should determine whether the product is fit for a particular purpose and is suitable for the user’s method of application before use.

Applicable Standards

UL 181B-FX, UL Listed, Tested in accordance with UL 723, FSI 15/SDI 30

Sizes & Colors

Colors Available:

Black Printed (BPT) Black Printed (BPT) Gray Printed (GPT) Gray Printed (GPT) Silver Metalized Printed (SMT) Silver Metalized Printed (SMT)

Lengths Available: 55 m

Widths Available: 48 mm, 72 mm

Standard Core Size: 3 in

Sizes and colors disclaimer: Lead times may apply. Please contact Shurtape customer service for information related to stock and non-stock sizes and colors.

Storage & Usage Conditions

Tape should be stored in its original packaging in a cool, dry area away from direct sunlight and should be used within 12 months of date of shipment. Surfaces to which tape is applied should be clean, dry and free of grease, oil or other contaminants.

Where to Buy

Shurtape Cloth & Duct Tapes products can be found online or nationwide at the following preferred retailers. Check our Where to Buy page for more information on where to buy Shurtape products.

Amazon Business
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