Vacuum Cups and Suction Cups Model: Universal Flat Series Part Number: F9-SI (Silicone) Vacuum Cup/ Suction Cup No. Flared Overall Dia. D Overall Dia. d Fitting Dia. H Static Height Load Capacity* at 24 in. Hg (609.6mm Hg) [2:1 Safety Factor] Recommended Fitting (Click for Info) RFQ Suspension Group for Cups F9-SI (Silicone) 0.38 in. (9.7 mm) 0.35 in. (9.0 mm) 0.16 in. (4.0 mm) 0.47 in. (12.0 mm) 170 grams