In general, a pneumatic spring is an energy storage device and a damper is an energy absorber. The most common function of gas struts is to raise, lower and tilt or support doors, flaps or the like and to keep these in their end positions (opened/closed). The force of the gas strut thus acts against the weight force of the application so that the force expenditure of the operator is greatly reduced. Considered from a purely physical perspective, the gas strut stores some of the energy released while lowering a part, which is then released again when raising, which ultimately "helps" the operator. Dampers, on the other hand, are used in applications where the movement or vibration of a weight or body must be braked or reduced. Like a gas strut, a damper also has a piston that divides the interior of the damper pipe into two chambers. These chambers are usually filled with oil. When displacing the piston rod, the oil has to be pressed through the piston via a special connection channel. Depending on the design of the connection channel, the oil can be pushed through more easily or with more difficulty. This resistance "results" in the damping force, which always counteracts the movement direction of the piston rod and increases with an increasing movement speed of the piston rod. Considered from a purely physical perspective, a damper absorbs the movement energy of an application or converts this into heat, thus ensuring for a higher level of comfort in the application. Of course there are many practical applications that require both the force-assisting and damping function in one product. SUSPA gas struts with various damping properties (damping in retraction or extension direction or in both directions or the end position damping) are designed in such cases.