For the E+H Omnigrad TA557 Barstock Thermowell, due to the challenging process conditions by heavy-duty applications, the load capacity of a thermowell must be calculated exactly. Dye penetration tests, ultrasound test, helium leakage test, pressure endurance test as well as various, non-destructive material tests prove the quality of materials and processing. The TA557 is designed for use with resistance and thermocouple thermometers mainly in heavy duty applications.