With regard to sealers for resilient flooring (marmoleum/linoleum, rubber, vinyl)
Normally sealers have a larger molecular size than finishes. They are meant as an undercoat for porous floors such as linoleum and some rubbers.
These are designed to be overcoated with acryllic finishes as on their own they are quite soft and wont stand up to traffic.
Some of the finishes available Pioneer Eclipse to name one are self sealing. Best to check first to save having to apply extra coats.