Patent ID: 7909236

Claim:
An end cap adapted to releasably secure to a tube having a first open end and a plurality of mounting openings formed in the tube proximal to the first open end, the end cap comprising: a base, a sidewall surrounding and extending from the base, a plurality of movable projections, each of the movable projections being formed on a deflectable tab portion of the sidewall and being biased to extend beyond an outer side of the sidewall, and a deformable sealing element extending from a perimeter of the base and/or from the outer side of the sidewall, wherein the end cap is adapted to be secured to the tube such that an inner side of the tube surrounds the outer side of the sidewall of the end cap, each one of the plurality of movable projections extends into one of the plurality of mounting openings formed in the tube proximal to the first open end, and the deformable sealing element is deformed against an inner side of the tube to form a circumferential seal between the end cap and the tube such that the end cap completely plugs a passageway through the tube, and wherein each of the plurality of movable projections further comprises a side ramp portion for contacting an edge of the mounting opening into which the movable projection extends when the end cap is rotated relative to the tube to promote inward deflection of the tab portion until the projection no longer extends into the mounting opening thus allowing the end cap to be removed from the tube.