Piston rod and pressure tube steel.
Fill medium: oil, nitrogen.

Piston rod, hard chromed.
Piston rod Ø4 is stainless steel.
Pressure tube painted black.

Individual filled gas springs are excluded from replacement.
Gas springs are maintenance-free, self-contained systems that are filled with nitrogen under high pressure. For end-of-travel damping and lubrication, a defined amount of oil is also contained inside. The gas springs contain a nonreturn valve in a threaded pin on the pressurised pipe, which allows the pushing force to be lowered at a later time.

Gas pressure springs in the sizes 04/12 and 06/15 must be stored and installed with the piston rod extending downwards. As of size 08/19, storage and installation in any orientation is possible. Keep in mind, however, that end-of-travel damping is effective only when the piston rod extends downwards.
As a consequence of the physical properties when filling a gas spring, a tolerance range of ±5 % results for the rated pushing force.

Gas springs are filled with nitrogen under high pressure and under no circumstances should they be opened or overloaded.

Other extension forces.

Potential extension force F1 (min. - max.)
Size 04/12: 10 - 180 N
Size 06/15: 40 - 400 N
Size 08/19: 50 - 700 N
Size 10/23: 100 - 1200 N
Size 14/28: 150 - 2500 N

See adjacent illustration for connectors and hardware.