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Element which prevents the axial displacement of a seal in its installation nut. Supporting rings are made primarily of elastic materials and can be loose in the seal or can be vulcanised into the sea

Hand-operated switch, which activates, converts or deactivates a signal or an action path (DIN 19 226).

Seal intended to seal a non-moving surface. Although the expression is often used, it is incorrect, as the seal is not "static", but only seals a non-moving surface.

Fluid devices and systems are always given a load from zero to the maximum, i.e. they are subject to a pulsating load. Therefore, either the fatigue strength under fluctuating stress or the fatigue li

. Cutting ring systems in accordance with DIN 2353, various forms of cutting rings are standardised in DIN 3861.

Velocity error

Refers to the frequency of a coupled system, in which the external periodic excitation in the system brings about the maximum amplitudes, i.e. where the exciter amplitude is most amplified.

Moving parts of devices are fixed in one or more positions by a detent and can be moved to another position given an increased shifting force.

Types of mounting of cylinders