This disclosure describes a kit comprising component for removing, replacing, and/or sealing toilet parts. In some embodiments, the kit comprises a flush valve assembly, fill valve assembly, a handle assembly, two tools, two gaskets, and packaging that also serves as one or more water containers. In some embodiments, the two gaskets are two conventional gaskets that can be combined to make a third gasket. In some embodiments, the combination of the two gaskets allows the creation of a synergistic gasket for sealing a tank-to-bowl interface than neither gasket could seal individually.