If you are looking at Permacel cloth tape then it is P-212HD Glass cloth, silicone adhesive, flame retardant; 0.010 inch thick, 1/2, 3/4, 1 inch widths. Boeing specification is grade C class 2 tape. This replaces obsolete tape part number P263.
For TFE tapes then it is P-421 a PTFE, skived, pressure sensitive thermosetting adhesive per MIL-T-23594; 0.0065 inch thick, 1/2 inch wide or P-440 PTFE, glass supported, pressure sensitive silicone adhesive; 0.005 inch thick, 1/2 inch wide. Both grade D class 2 specification.
Regarding Scotch 70 this is a grade C class 2 self bonding silicone rubber tape produced by 3M with properties of high temperature; 0.012 inch thick, 1 inch wide