17 o-ring seals; anti-vibration materials and damping materials, of polyurethane elastomer; stoppers of polyurethane elastomer; cushioning materials of polyurethane elastomer; seals, of polyurethane elastomer; sealing materials, of polyurethane elastomer; sealants, of polyurethane elastomer; sound damping materials, of polyurethane elastomer; dust proofing materials, of polyurethane elastomer; lids and caps for tips of protectors of electric power tools, of polyurethane elastomer; rubber parts for using as switch buttons; washers of polyurethane elastomer; oil seals being non-metal sealing rings, other than for machinery and land vehicle engines; rubber-baked gaskets, not for engine; rubber-baked seals; seals of rubber; sealing rings, non-metal; washers of rubber or vulcanized fiber; shock-absorbing buffers of rubber and fittings thereof; diaphragm, of rubber; dust proofing sealants; damping materials; hydraulic joint packing for sealing flexible pipes; joints for sealing, namely, sealant compounds for joints; waterproof joint packings for sealing electric equipment and thermal insulation; waterproof joint packings for sealing purposes for use in the construction machines, land vehicles, and industrial machines; valves of rubber; plastic semi-worked products; insulating materials; sound proofing materials; sound damping materials; vibration dampers of rubber; non-metallic seals; OIL SEALS; O-RINGS; PACKINGS; non-metal gaskets, not for engine; polyurethane rubber; Oil seals being machine parts for industrial machines, construction machines; oil seals being non-metal sealing rings for vehicle engines