ANVER Vacuum Cups and Suction Cups Model: Universal Flat Series Part Number: F30-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) F30-NBR (Nitrile) 1.25 (31.8) 1.17 (29.7) 0.31 (7.8) 0.75 (19.1) 0.63 (16.0) 0.177 (2.90) 2.8 lbs (1.27 Kg)