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Covalence/Tyco 251
Professional Grade Duct Tape - Metallized

General Information
251 is an 11 mil professional grade duct tape (metallized) used for sealing duct systems, foil covered sheathing and insulation board. Also used for holding insulation materials in place.
Backing Adhesive
(unwind)		 Thickness
(total)		 Liner Type
(outer)
Polyethylene Coated Cloth Rubber 11.00 mil  

Adhesion to Steel
180° Peel		 Adhesive Activation Tensile Strength Elongation Percent
55.00 oz/in Pressure 23.00 lbs/in  

Min Application
Temp		 Min Service
Temp		 Max Short-Term
Temp		 Max Long-Term
Temp
40 °F 0 °F 200 °F  
Adhesive Tape Features
  • Specially formulated pressure sensitive adhesive
  • High tensile strength, adhesion and tack
  • Designed for flexible ducts, insulation and other aluminum color surfaces
  • Extremely conformable
  • Will not twist or curl during application
  • Meets UL 723
  • Adhesion to backing: 40 oz./in.- PSTC-1
  • Flame spread: 10
  • Smoke development: 5
  • Grey calendered rubber
Adhesive Tape Applications
  • Seal duct systems and foil covered sheathing
  • Seal fiberglass insulation board
  • Hold insulation materials in place
Adhesive Tape Markets Served
Adhesive Tape Colors

Comparable products

Covalence/Tyco 251 View Datasheet
Professional Grade Duct Tape - Metallized
Backing Adhesive Thickness Adhesion
 Polyethylene Coated Cloth   Rubber   11.00mil   55.00oz/in 
Shurtape Technologies Inc SF682 View Datasheet
Cloth/Duct Tape
Backing Adhesive Thickness Adhesion
 Polyethylene Coated Cloth   Rubber   11.00mil   50.00oz/in 

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