Leak control flange

Abstract

The present invention may lie in a leak control flange that comprises a hollow, cylindrical riser portion forming a throat therethrough; a horizontal flange portion extending outwardly from an upper end of the riser portion; horizontal channels that each extend, from a channel inlet on a periphery of the flange portion, along an underside of the flange portion, and inwardly towards the riser portion. The cylindrical riser portion includes a plurality of sealing rings arranged axially therealong, each sealing ring being configured to engage an outer surface of the riser portion to form a sealing interface therewith. Each sealing ring includes one or more capillary passages therein, which are configured to permit liquid to flow downwardly under gravity past the sealing ring while resisting upward flow of liquid.

Dependencies are inferred from the claim text.