The application of hot wax sealing in isolation and protection has a long history and is widely used in industries such as lacquered wooden furniture maintenance and metal anti-corrosion treatment. Thanks to the excellent hydrophobicity and film-forming density of wax materials, they have been frequently used in the conservation and restoration of bronze artifacts. Therefore, microcrystalline paraffin wax, insect white wax, and white beeswax—commonly used in actual restoration—were selected for this study. The UV resistance, salt spray corrosion resistance, and composite condition corrosion resistance of these sealing materials were evaluated. The results show that:1) insect white wax exhibited significant color change during salt spray hygrothermal aging, with a color difference value (ΔE) exceeding the 18 NBS limit; 2) white beeswax underwent varying degrees of blackening during the hot wax sealing process and also deteriorated under composite aging; 3) microcrystalline paraffin wax showed a relatively milder degree of degradation and better conservation effect across tests. In summary, through analyzing experimental data from the three wax sealing materials, it was found that microcrystalline paraffin wax had superior sealing properties and could effectively isolate the factors that lead to bronze deterioration.