Past electron-positron g-2 experiments yielded sharpest bound on CPT violation

A seal or packing member, in annular or elongate strip form, the packing member having at least a partially layered construction comprised of at least one layer of a fabric-type material and another layer comprised of a binder having a fibrous filler generally uniformly disposed therein, the fibers of the filler being randomly oriented, the layers being bonded to one another.