US Patent 10260589 Gas strut

A gas strut includes a housing, a rod, and a seal. The rod extends along a centerline and is spaced radially inward from the housing to axially move between a retracted position and an extended position with respect to the housing. The seal includes an outer portion engaged to the housing, an inner portion in sliding contact with the rod, and a mid-portion spanning between and engaged to the inner portion and the outer portion during normal operation. The mid-portion is constructed and arranged to break after about a predetermined number of gas strut actuations.