Using Silicone Heater in Dusty, Damp, or Demanding Settings

https://silicone-heaters.theburnward.com/installing-a-mica-heater-practical-steps-for-better-heat-transfer

Many heating problems look like a power problem at first. In practice, the cause may be contact, heat loss, sensor position, or poor fit. A silicone heater works best when these parts are planned together