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 F85-SIT Silicone 3.30 (85.0) 0.48 (12.0) 1.20 (31.0) 1.00 (26.0) 1.85 (30.32) 39.00 (17.8)