Vacuum Cups and Suction Cups Product Photo (Click to Enlarge) Vacuum Cup Part Number and Material D Overall Dia. in. (mm) d Fitting Dia. in. (mm) H Static Height in. (mm) A Compressed Height in. (mm) Volume in. (cm) Capacity* lb. (kg) 2 to 1 Fitting Group Suspensions Group RFQ F77-SITSilicone 2.94 (74.7) 0.46 (11.7) 1.24 (31.5) 1.02 (26.0) 0.976 (16.00) 36.20 (16.4)