Troubleshooting Slow Heat-Up in a Silicone Heater System

https://heater-technology-guide.vantagequill.com/posts/how-to-choose-an-ito-glass-heater-for-optical-applications

In temperature-controlled assemblies, a silicone heater must deliver heat in a controlled way. It uses silicone rubber around a resistive heating circuit. One useful trait is flexibility. Still, bond quality can change the result