Efforts are being made all over the world to commercialize the solid oxide fuel cell technology due to its higher efficiency and eco friendly nature [1] and [2]. Based on design, solid oxide fuel cell (SOFC) can be categorized into two main categories namely tubular and planar design. Planar design is better than tubular design due to its higher current density with simple processing [2], [3], [4], [5], [6] and [7]. However, the planar design of SOFC requires proper sealing at the edges of the cells to prevent fuel leakage and air mixing during cell operation [8] and [9]. The glass and glass ceramics are considered as most suitable materials for sealant as compared to the conventional sealing materials due to their compatibility with other components of SOFC at high temperature (800–1000 °C) [10]. However, apart from compatibility criteria it should also have good chemical stability in reducing, oxidizing and humid atmosphere. Additionally, sealant should be flexible to withstand a slight compression and expansion in different parts of the stacks.