INSULATION FOR FRICTION, HEAT, AND SOUND ABSORPTION, NAMELY, PLATES AND SHEETS, FOR DAMPENING VIBRATIONS, OSCILLATIONS AND SHOCK; INSULATION, NAMELY, SHAPED PARTS FOR OSCILLATION-DAMPENING, ELASTIC SUPPORT, SOUND DAMPENING, VIBRATION DAMPENING, AND SHOCK AND JOLT DAMPENING, ALL AFORE-NAMED GOODS MADE OF PLASTICS