Could you please explain what is a vibration-resistant disconnector?

There are flat non-insulated disconnector for double-crimping in KBT range- РП-М and РП-П. These disconnectors are vibration-resistant. The new type is called BРПИ-М and ВРПИ-П. They have an additional copper tube placed between the palm and the cuff. This copper tube is added for better vibration-resistance and more reliable tensile strength. This kind of disconnectors is used in the aircraft industry and railway car building, where functional units are subjected to intense vibration.