Open top, rigid 1-gallon pail January 26, 2016 We now offer our couplants in a 1-gallon, open top rigid pail. Ideal for applications where couplant is painted on a part. Metal handle on the pail for convenient carrying. UltraSoniX, EchoTrack, SoniX and VersaSonic now available. Call or e-mail for more information and pricing. (360) 6719121, *protected email*.