Cloth & Duct Tapes

PC 621 Heavy Duty Cloth Duct Tape

Heavy duty cloth duct tape designed for HVAC applications to hold, seal and seam sheet metal and flex duct, exhaust vents and preformed insulation, and can also be used in industrial applications for holding, splicing, protecting and packaging. Use PC 621 for demanding applications that require an easy-to-use tape with excellent conformability, tack and holding power.

Where To Buy Data Sheet

Features & Applications

Heavy duty duct tape

Excellent tack, conformability and holding power

Easy to unwind and tear

Will not twist or curl during application

Waterproof backing

Specifications

Learn more about PC 621 in depth by exploring all of its features and uses. You can also visit TapeUniversity.com to learn more about choosing and using tapes.

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Markets

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Construction

Backing: Waterproof polyethylene film with a cloth carrier

Adhesive: Natural rubber adhesive

Liner: NA

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Properties & Technical Data

Product Nomenclature: PC 621

Property	Standard	Metric
Adhesion to Stainless Steel	55 oz/in width	6.02 N/10 mm
Elongation	18%	18%
Service Temperature Range	50 F to 200 F	10 C to 93 C
Tensile	30 lbs/in width	52.5 N/10 mm
Thickness	11.0 mils	0.28 mm

Physical and performance characteristics shown above are obtained from tests recommended by PTSC, ASTM, government agencies or Shurtape Technologies, LLC, Quality Assurance and Technical Service departments and do not represent product specifications or a guarantee of product performance. Individual rolls may vary from these standards (or physical properties). 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.

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Downloads

Technical Data Sheet
Sales Sheet
Safety Data Sheet
Infographic
Regulatory Compliance Letter

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Sizes & Colors

Colors Available: Silver (SIL) Silver Printed (SPT)

Lengths Available: 60.1 yd

Widths Available: 1.88 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.

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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.

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Applicable Standards

Tested in accordance with UL 723

Where to Buy

Shurtape Cloth & Duct Tapes products are available both online and at retailers nationwide. Check our Where to Buy page for more information on purchasing Shurtape products both locally and online.

PC 621 Heavy Duty Cloth Duct Tape

Features & Applications