A bin system that reduces the amount of trash that escapes through the auger hole formed on the bin. The system includes a bin with an auger hole formed on one end in which an auger nozzle is inserted. Mounted over the auger hole is a sealing disk assembly that includes a coaxially aligned ring spacer, an inner mounting ring affixed to the end of the bin, a flat circular elastic disk with an inner bore or circular valve, an outer ring and a plurality of threaded connectors. During operation, the auger nozzle is axially aligned over the bin's auger hole and the inner bore. When the bin is then forced over the auger nozzle, the elastic disk bends inward and stretches to create a tight seal around the auger nozzle. When the bin is moved, the auger nozzle is pulled through the disk which rebounds to its flat configuration.