Vacuum Cups and Suction Cups For the Packaging Industry SUP16-NBR Cup No. and Material D Dia. in. (mm) d Dia. in. (mm) H height in. (mm) h height in. (mm) Bottom Surface Material SUP16-NBR (Nitrile) 0.63 (16) 0.20 (5) 0.79 (20) N/A Smooth Nitrile