Classification of filling materials used to fill gaps and cavities in manufacturing sites. Used in various manufacturing processes including gap adjustment of mechanical parts, void filling in piping, insulation filling for electrical equipment, and repair filling of building structures. Includes putty, caulking materials, foam fillers, powder fillers, and liquid fillers, which are primarily used for space filling purposes unlike adhesives. Many products have functions such as heat resistance, insulation, and waterproofing, making them essential consumables for manufacturing equipment maintenance and quality improvement.