EPDM Slang drain connectors ensure a hermetic fitting between bituminous membranes and rainwater drains. Fitted with anti-surge rings for maximum safety and watertightness. EPDM Slang drain connectors are used to connect bituminous roof membranes to rainwater drains. The slightly conical-shaped tang facilitates installation in rainwater pipes. The perforated flange facilitates adhesion with bituminous membranes, while a series of rings positioned along the tang ensure a hermetic seal if water rises up the downpipe.