Some force loss should be expected due to sealing material aging and gas permeability through the seal, typically this would be around 1 to 2% per year and would be typical for all makes of gas spring.
Failure to store the springs in the correct orientation can lead to the seal drying-out which will accelerate force loss.
Factors such as temperature changes and environmental conditions can affect seal aging and speed up the process of force loss.
Most applications will tolerate a maximum force loss of 10%, although this is application dependant.
