Vacuum Cups and Suction Cups For the Packaging Industry SUB64NR Cup No. and Material D Dia. in. (mm) d Dia. in. (mm) H height in. (mm) h height in. (mm) Bottom Surface Material N/A SUB64NR (Natural Rubber) 2.52 (64) 0.63 (16) 1.97 (50) 0.79 (20) Cleats Natural Rubber