Vacuum Cups and Suction Cups Model: Universal Flat Series Part Number: F3.5-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 F3.5-SI (Silicone) 0.16 in. (4.1 mm) 0.14 in. (3.5 mm) 0.09 in. (2.2 mm) 0.28 in. (7.0 mm) 25 grams