The naturally occurring rubber harvested from rubber trees is the oldest type of adhesive base and is still in use today in various masking tapes and applications tapes used in the graphics industry. They are inexpensive, can be formulated with predictable adhesion properties, and work well in applications with low shear requirements. These adhesives work well in ambient and low-temperature applications but will struggle when the temperature exceeds about 120°F.
3M also makes an electrical tape made of silicone rubber for applications where Class “H” (180°C/356°F) temperatures are encountered i.e., silicone rubber cables.