A Protective Tube is an industrial system component designed for reliable mechanical, electrical, sensing, or thermal integration within a heating system. It supports applications where repeatable thermal performance, equipment integration, and dependable operation are important to the overall process.

The product is selected as part of a complete thermal system rather than as an isolated component. Heat load, target temperature, heat-up time, steady-state losses, process conditions, mounting arrangement, available power, and control philosophy all influence the final configuration.

Runkel can configure the protective tube around the customer’s operating data. Depending on the duty, available options may include alternative materials, dimensions, electrical ratings, sensors, lead arrangements, process connections, mounting hardware, insulation, enclosures, control panels, and communication interfaces.

For industrial projects, the design review also considers maintainability, safe surface or sheath temperature, material compatibility, electrical protection, over-temperature response, and any applicable pressure, environmental, or hazardous-area requirements. Final ratings and compliance documentation are confirmed against approved project specifications.

Within the Heating Accessories portfolio, the Protective Tube can be supplied for standard equipment, custom machinery, replacement projects, prototypes, and fully engineered installations.