Sulfur　hexafluoride　(SF6)　is　extensively　employed　in　the　power　industry.　However,　its　emissions　significantly　contribute　to　the　greenhouse　effect.　The　direct　recovery　of　high　purity　SF6　from　industrial　waste　gases　would　benefit　its　sustainable　use,　yet　this　represents　a　considerable　challenge.　Herein,　we　report　the　enrichment　of　SF6　from　SF6/N-2　mixtures　via　adsorptive　separation　in　a　stable　Co(II)-pyrazolate　MOF　BUT-53　(BUT:　Beijing　University　of　Technology),　which　features　dynamic　molecular　traps.　BUT-53　exhibits　an　excellent　SF6　adsorption　uptake　of　2.82　mmol/g　at　0.1　bar　and　298　K,　as　well　as　an　unprecedented　SF6/N-2　(10:90)　selectivity　of　2485.　Besides,　the　remarkable　SF6/N-2　selectivity　of　BUT-53　enables　recovery　of　high　purity　(＞99.9%)　SF6　from　a　low　concentration　(10%)　mixture　through　a　breakthrough　experiment.　The　excellent　SF6/N-2　separation　efficiency　was　also　well　maintained　under　humid　conditions　(RH　=　90%)　over　multiple　cycles.　Molecular　simulation,　single-crystal　diffraction,　and　adsorption　kinetics　studies　elucidate　the　associated　adsorption　mechanism　and　water　tolerance.