The welding operation is performed to connect the metal terminals to the metal bellow capsules made of 350 Stainless Steel and other type of materials. This welding operation is completed by the use of specialized welding equipment, and for the metal bellow type seals only. MANU-PRO page third of fourth Other welding operation involves the welding of two piece gland ring made of 316 Stainless Steel or other type materials to obtain a steam heated gland feature. Given below are the stages involved in manufacturing of various seal components.