Vessels have a Duran Style O-Ring Flange. Flanges can Either be Sealed with an O-Ring or Grease. Circulatory Jacket is Offered with Detachaable Hose Barbs. Interal Threaded Joints are Supplied with Nylon Bushings and Polypropylene Barbs. 1.0″ Beaded Pipe Connections are Sold Seperately. See PRG-8022-03 for Coupling and PRG-8030 for Port Selction. Four Mortin Idents are Added for Increased Stirring Porformance.