Abstract: A canister for use with a chemical oxygen generation cell. In some embodiments, the canister includes two main canister assemblies. One assembly houses the briquette, the ignition cone, and one or more filters. A second assembly houses a thimble and one or more filters. Once the components are placed within each assembly, the two assemblies can then be easily joined together to form the cell. In some embodiments, the sealed canister is constructed with at least one weakened area along at least one canister wall. Upon premature activation of the cell, pressure within the sealed canister causes at least one controlled rupture in the weakened area of the canister to vent gases and prevent an explosion.