These units came from a closed HVAC contractor.  One is new and the other is open box.  I am unsure if it is used or just out of box.  Sold as-is.

Discover the innovative Rectorseal 45317 AC Leak Freeze PRO nano with Magic Frost. This product is perfect for refrigerant leak repair and is compatible with a range of AC systems including packaged/rooftop units, central ACs, split systems, and heat pump split systems. It features a copper reservoir, brass fittings, and a nylon hose for easy installation.

This refrigerant leak repair sealant comes in a multicolor design and is suitable for use with the RectorSeal brand. The model number for this product is 45317, and it is compatible with the same model number. This HVAC and refrigeration leak sealant is a must-have for anyone in the business and industrial sectors.