ANVER Vacuum Cups and Suction Cups Model: Universal Flat Series Part Number: F52-NBR Vacuum Cup Part Number and Material Flared Overall Dia. in. (mm) D Overall Dia. in. (mm) d Fitting Dia. in. (mm) H Static Height in. (mm) A Compressed Height in. (mm) Volume in. (cm) Load Capacity* lb. (kg) 2 to 1 Fitting Group (Click Image for More Info) Suspensions Group (Click Image for More Info) F52-NBR (Nitrile) 2.16 (55) 2.05 (52.0) 0.31 (8) 0.87 (22.0) 0.69 (17.5) 0.427 (7.00) 9.3 lbs (4.2 Kg)