35 is Scotch's product number or SKU for the colored rolls of tape. 33+ is their SKU for the black rolls. They also offer electrical tape SKUs such as 22 and 88.
Scotch Color Coding Electrical Tape is a premium grade, 7-mil thick electrical insulating tape. Each roll is either 1/2 inch wide x 20 feet long or 3/4 inch wide x 66 feet long depending on the pack purchased.
Flame-retardant, weather-resistant; resists UV rays, abrasion, moisture, alkalies, solvents, many acids. For indoor and weather-protected outdoor applications. Stretches to conform to virtually any shape that requires color-coded insulation. Outstanding electrical and mechanical properties make 3M 35 is excellent for use in phase identification, color coding of motor leads and piping systems, and for marking safety areas.
One of each of 9 colors comes in each set. Colors include blue, brown, green, grey, orange, red, violet, white and yellow (the 8-pack leaves out the grey). The 3-pack contains black, white and red.
Standards Met: UL Listed, CSA Approved, VDE 0340-TEIL1. Carrier/Backing: polyvinyl chloride (PVC) film. Adhesive: rubber resin. Thickness: 7 mils (carrier, adhesive). Adhesion: 20 ounces per inch (to stainless steel test panel). Tensile Strength: 17 pounds per inch (longitudinal). Dielectric Breakdown: 8750 volts. Service/Operating Temperature: 0F to 176F. Elongation: 225%. Core: 1-1/2-inch diameter.
This 7 mil vinyl, premium grade, electrical tape stretches to conform to virtually any shape that requires color-coded insulation. It can be used for phase identification, color coding leads and piping systems and for marking safety areas.