Preferred Postage Supplies Supplies Sealing Solution

One half gallon (64 oz.) of preferred postage supplies sealing solution Ready to use No messy mixing or residue in machines like other add water products For all DM series mailing systems One half gallon (64 oz. total) of ready to use sealing solution. For use in all DM Series Mailing Systems. Cheaper than the brand name Pitney Bowes.