At the time of crimping and fixing a plastic lens on a lens barrel, productivity is improved by achieving an accurate alignment and a reliable crimping. Specifically, the present invention is a fluoroelastomer composition containing a polyol-crosslinkable fluoroelastomer, a polyhydroxy aromatic compound, a quaternary phosphonium salt, a divalent metal oxide andor divalent metal hydroxide and an antioxidant. Thus, the bridge plate is stably supported, and the body is not broken due to stress concentration. A phase-change material is contained within the open cells and the phase-change material is configured to receive thermal energy of the fluid from the ligaments of the foam structure. Workpieces processed by a method of this type are distinguished by a comparatively great fatigue limit and fatigue strength with simultaneous high resistance to wear and tear. The shots are fired in a sequence and pattern such that no laser shots are fired at consecutive locations and no consecutive shots overlap.