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3M 433L
High Temperature Aluminum Foil Tape

General Information
433L is a 3.5 mil, high temperature aluminum foil tape. It is primarily used for many applications involving high temperatures.
Backing Adhesive
(unwind)		 Thickness
(total)		 Liner Type
(outer)
Aluminum Silicone 3.50 mil  

Adhesion to Steel
180° Peel		 Adhesive Activation Tensile Strength Elongation Percent
38.00 oz/in Pressure 20.00 lbs/in 3.50%

Min Application
Temp		 Min Service
Temp		 Max Short-Term
Temp		 Max Long-Term
Temp
32 °F -65 °F 600 °F  
Adhesive Tape Features
  • Aluminum Foil (Alloy 1100-0) backing
  • Adhesive is clear silicone
  • Excellent protection
  • Heat reflective
  • Flame resistant
  • Wide temperature range
  • Helps protect parts from water, dust or chemical damage
  • Helps protect from heat damage
  • Will not support combustion
  • Will seal or protect even under extreme temperature conditions
Adhesive Tape Applications
Adhesive Tape Markets Served
Adhesive Tape Colors
  • Silver

Comparable products
3M 433L View Datasheet
High Temperature Aluminum Foil Tape
Backing Adhesive Thickness Adhesion
 Aluminum   Silicone   3.50mil   38.00oz/in 

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The physical properties listed are typical values and are not to be considered as specifications. Our suggestions for use are based on tests we believe to be reliable. However, the purchaser must carry out their own tests to determine the suitability of the product for their internal use. Information is given in good faith, but without warranty.

It is essential, as with all pressure-sensitive tapes, that the surface to which the tape is applied be clean, dry and free of grease and oil.

Shelf life from date of manufacture is based on the product being stored at 70°F(21°C) / 50% relative humidity out of direct sunlight.

Specification compliance is dynamic and should only be used as a general guide. Always confirm that the tape you are interested in currently complies with all specification requirements. Please verify that the product number that you select is available in the proper size and color to meet your specification.

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