Bergquist sil pad 400 thermally conductive insulating material bergquist sp400 0007 00 1212 bergquist sil pad 400 0007 12 x 12 sheet is designed to replace grease and mica for power applications and is ideal for reducing assembly time and maintaining cleanliness in production environments consists of a glass fibre sheet coated with a thermally conductive silicon elastomer bergquist sp400 0007 00 1212 sil pad 400 0007 12 x 12 sheet