Vacuum Cups and Suction Cups For the Packaging Industry SUB39NR Cup No. and Material D Dia. in. (mm) d Dia. in. (mm) H height in. (mm) h height in. (mm) Bottom Surface Material Item Weight oz. (grams) SUB39NR (Natural Rubber) 1.54 (39) 0.63 (16) 1.89 (48) 0.79 (20) Smooth Natural Rubber 0.494 (14)