See the relevant product standards for the dielectric loss factor. See the relevant product standards for transformer oil resistance. See the relevant product standards for weight loss. The pinhole test can be found in the relevant product...
Polyurethene MW-79C - JW 117741B CL -155 - CLASS 155 Insulation Characteristics: All the characteristics of polyurethane 130ºC plus the increased thermal rating to class 155ºC, solderable at 680ºF. General Applications: R.F. coils, solenoids, encapsulated coils, motors,...