ANVER Vacuum Cups and Suction CupsModel: P-300 SEALING RINGPart Number: A-3350027 ANVER and P-Series Description and Part No. Connection Thread Size Diameter in. (mm) Height in. (mm) Load Capacity at 24 in. Hg (609.6mm Hg)[2:1 Safety Factor] lb (kg) P-300 SEALING RING (Ethylene-Propylene)A-3350027 33.50.027 P300.50 N/A 12.20 (310.0) 1.04 (26.5) N/A