An aircraft tire having a folded belt construction and a belt edge strip over the folded belt construction has improved high speed properties. The gasket includes a flexible metal retainer, and at least one seal element which is supported on the retainer along at least a portion of the inner or outer perimeter thereof. Devices of this nature include fastening tools, throwing mechanisms and other devices in which input energy is built up during a portion of a cycle followed by the coupling and release of that energy to an output mechanism.