Dispensing spigot

A container having a spout and a dispensing spigot attached to said spout for dispensing contents of the container, said spigot including a concave diaphragm wall fitting within said spout such that an external surface of the diaphragm wall engages an inner surface of the spout, the improvement comprising a V-shaped groove formed in the inner surface of the spout of the diaphragm wall and a complementary flange formed on the external surface of the diaphragm wall and projecting into said groove, one surface of said flange being in sealing contact with one side of the V-shaped groove, said flange being an elongate member in a direction projecting away from its associated external surface of the diaphragm wall and at an acute angle thereto, the length of said elongate member being greater than the thickness thereof, the length of said flange being formed between said one surface and a generally parallel second surface connected by an end wall of the flange said second surface and said end wall being joined at a pointed edge, said pointed edge engaging the other side of said V-shaped groove, whereby sealing is achieved along (1) substantially the entire surface of said one surface of the flange and (2) between the end said of said flange with said other wall of said V-shaped groove.