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 F25-SIT Silicone 0.99 (25.1) 0.15 (3.8) 0.48 (12.1) 0.38 (9.7) 0.430 (0.70) 3.10 (1.4)