SPL suction cups are used to handle heavy loads such as sheet metal or glass panels. They have internal cleats allowing them to handle thin sheet metal without distorting them and for vertical handling (non-slip). SPL suction cups are delivered without holes for fittings or you can choose from our range of standard models or specific models on request. Materials NBR Nitrile Si Silicone (1) A G3/8" internal thread is available for connection to the vacuum system. For all orders, please specify the part number from characteristics table and any required threadings E.g.: SPL240NBRG38RS1 Accessories Suction cups from the SPL series can be mounted on RSC series spring systems. SPL 240 suction cups can be mounted on the IFA 12 120 fitting and the TS560 spring system. See page 4/5. COVAL vacuum managers