3M™ Scotchlok™ Ring Tongue with heat shrink insulation ensures an ideal fit while offering reliable and safe performance. The terminal has a nylon-insulated, brazed-seam barrel and withstands temperatures of -40 to 221 degrees Fahrenheit (-40 to 105 degrees Celsius). Electrolytic copper construction offers good conductivity and a tin-plated finish resists corrosion. Available in both bottle and bulk packaging. 3M™ Scotchlok™ Ring Tongues are UL Recognized and CSA certified.3M Scotchlok Heat Shrink Pre-Insulated Electrical Terminals help protect against challenging environments with quality moisture protection, and provide improved pullout strength and strain relief. The adhesive-lined heat shrink material, when properly crimped and shrunk, provides a seal resistant to water, salt, steam and other related contaminants. The connectors are colour coded for wire range identification and the transparent tubing allows for visual inspection.