Container assembly with flexible seal

A method of forming a container assembly, the method comprising:

• providing a storage receptacle having a base and a sidewall, the sidewall projecting upward from the base and terminating at a peripheral edge, the sidewall having an interior surface and an exterior surface;
• providing a removable lid having a flexible seal, the removable lid having an annular first receiving channel defined by first and second channel walls, the first and second channel walls extending downward from a bottom surface of the removable lid, and a second receiving channel, the flexible seal having an annular securing member and an annular blade portion, the annular securing member of the flexible seal being at least partially disposed in the annular first receiving channel of the lid for connecting the seal to the lid, the annular blade portion of the seal extending from the securing member toward an exterior wall of the second receiving channel;
• aligning the removable lid with the storage receptacle, such that the second receiving channel is proximate to the peripheral edge of the sidewall of the storage receptacle;
• and
• securing the lid to the storage receptacle and causing an upwardly projecting extent of the sidewall of the storage receptacle to project upwardly into the second receiving channel and for the sidewall of the storage receptacle to deflect the blade portion of the seal into the second receiving channel, and further causing an interior surface of an upwardly projecting extent of the sidewall of the storage receptacle to contact the blade portion of the seal and an exterior surface of an upwardly projecting extent of the sidewall of the storage receptacle to contact an interior surface of the exterior wall of the second receiving channel.