Essim Serikovich Dandybaev Senior lecturer of the Department “Technological equipment, mechanical engineering and standardization”. Kyrgyz-Russian Slavic University (KRSU), “Dynamics and Strength of Machines” in 2002. Kyrgyz Republic, Bishkek. Candidate of Technical Sciences, specialty 05.02.18 – Theory of mechanisms and machines, 2005, Institute of Mechanical Engineering of the National Academy of Sciences of the Kyrgyz Republic. PhD degree in the specialty “Mechanical Engineering” in 2017 Ministry of Education of the Republic of Kazakhstan. 2000-2006 – junior researcher, researcher, senior researcher of the laboratories “Impact and impact machines” of the Institute of Mechanical Engineering of the National Academy of Sciences of the Kyrgyz Republic, the Institute of Physics and Mechanics of Rocks of the National Academy of Sciences of the Kyrgyz Republic 2002-2005 – postgraduate student of the department “Mechanics” KRSU 2003-2005 – Lecturer at the Department of “Mechanics” KRSU 2007-2020 – Head of the branch of the German company Hansa-Flex in Karaganda 2017 to the present – Senior Lecturer at the Department “Technological Equipment, Mechanical Engineering and Standardization”. Dynamics of machines, impact mechanisms, sealing elements in hydraulic systems.