The noise during suction and exhaust in pneumatic machines and control mechanisms is efficiently controlled by using SIKA-elements. Complicated sound dampers with lower efficiency are replaced by using simple SIKA-elements with hexagon section and thread.

Porous sintered elements gain their higher efficiency because of simultaneous control of reflection and absorption noise. Because of their high absorption efficiency, elements with high permeability are used for noise control systems with high speed turbulent airflow.