This die is used when the die cover under load is subjected to extreme stress that can exceed the plastic limit. Using the principle of thermal shrinkage, we place a ring on the cover section with the aim of reducing its deflection under load and, consequently, the maximum stress. Thanks to the shrinkage ring technology, the covers are more stable and their operating life can be doubled. Last but not least, by using the shrinkage ring, it is possible to reduce the required die diameter and/or give a full guarantee to a die that normally cracks under load. Products: Railway Sections