This study presents an usage of WebGL technology for VTK Polygonal Data visualization over the Web, without need for installing browser plugins. It also shows tools, methods and concepts that, integrated, provide a way for creating a prototype for visualizing VTK Polygon Data models over the Web. The study was developed based in researches about different technologies involved in the process of creating the prototype that was implemented in this study, since data model definition and utilization of a Web framework, to using the SceneJS framework in the construction of graphical representation. The application of the researched technologies allowed implementing the prototype of VTK Polygonal Data model visualization over the Web. This study was developed at UTFPR - Universidade Federal do Parana.