Cushioning?

CC: Shock absorber at both endsP: Flexible cushioning rings/plates at both ends
Elastomer cushioning, at both ends, stroke not adjustable
No cushioning
P1: Flexible cushioning rings/plates with stop at both ends
P: Flexible cushioning rings/plates at both ends
PPS: Self-adjusting pneumatic end-position cushioning
PPV: Pneumatic cushioning adjustable at both ends
Short elastic cushioning rings/pads at both ends
Y12: external hydraulic cushioning
self-adjusting
self-adjustingSoft characteristic