Shape memory insulators comprising a first layer of core material, such as polymeric insulative material, and a second, shape memory layer of elastomeric material, for attachment to objects. The silicon wafer has a first direction and a second direction which are mutually intersected. The coupling is arranged to present first and second internal bearing surfaces, against which the bolts of the pitch coupling can be tightened. The label ply has a die cut through it that defines a label portion and a lip portion.