Rubber materials are used across a huge range of domestic and industrial applications. There are ten common types of rubber, including natural rubber, styrene-butadiene rubber, butyl, nitrile, silicone, polyurethane, hydrogenated nitrile, and so on. This book discusses several different types of rubber materials and their mechanical, optical, acoustic, and kinetic properties. This book includes six chapters. Chapter 1 by Buddhima Rupasinghe discusses the recycling of silicone-based materials. Chapter 2 by Azemi Samsuri discusses recycled carbon black based on styrene-butadiene rubber, natural rubber, and nitrile rubber compounds. Chapter 3 by Hammat Valiev et al. describes the influence of composition and structure on the properties of elastomeric composites with silicon dioxide fillers. Chapter 4 by Ntalane Sello Seroka et al. discusses sugar cane bagasse ash, an agricultural residue with potential rubber filler applications. Chapter 5 by Józef Haponiuk et al. examines the origin, specifications, and applications of natural rubber latex. Finally, Chapter 6 by Mounir Kassmi presents the characterization of hydrogenated amorphous silicon using infrared spectroscopy and ellipsometry measurements.We would like to thank all the authors for their excellent contributions. We would also like to thank the staff at IntechOpen, especially Author Service Manager Maja Bozicevic for her effective editing and support during the production of this book.