Boston Industrial Solutions, Inc. introduces ceramic rings for pad printer ink cups made of fine crystalline and higher density Zirconia (ZrO2). The ceramic rings will fit ink cups of: Autoroll, Comec, Techa Print, Pad Print Machinery (EPSVT), Mugen Seiki, Inkcups, Imtran, Pentex, Luen Hop, and many other pad printing machines.