tiivistemäntä

Tiivistemäntä, often translated as piston seal or packing piston, is a component found in various mechanical systems, particularly in hydraulic and pneumatic cylinders. Its primary function is to prevent leakage of fluid or gas between the piston and the cylinder wall. This sealing action is crucial for the efficient operation of cylinders, ensuring that pressure is maintained and that the piston can move smoothly and reliably.

Tiivistemännät are typically made from elastomeric materials like rubber or polyurethane, chosen for their resilience, wear resistance, and ability to withstand the operating pressures and temperatures of the system. The design of a tiivistemäntä can vary, but it often involves a ring-shaped profile that is compressed when the piston is inserted into the cylinder. This compression creates a tight seal against the cylinder bore.

In hydraulic systems, a malfunctioning tiivistemäntä can lead to a loss of pressure, reduced lifting or pushing force, and potential damage to other cylinder components due to internal leakage. In pneumatic systems, a faulty seal can result in a loss of air pressure, leading to sluggish movement or complete failure of the pneumatic actuator. Regular inspection and replacement of worn or damaged tiivistemännät are essential for maintaining the performance and longevity of hydraulic and pneumatic equipment. The specific type and material of the tiivistemäntä are chosen based on factors such as the fluid or gas being used, operating pressure, temperature, and the desired lifespan of the component.