If you vacuum seal it with mylar lined bags and some oxygen absorbers, it can last up to 5 years, which is a long time.
Oxygen will get through normal plastic vacuum sealing bags and ruin the taste and eventually nutritional content otherwise after a year or two. Mylar lining stops most of that and the oxygen absorber gets the rest.
The thick bags will also stop rice moths from getting through (they are able to get through most cardboard and thin plastic bags), and the lack of oxygen will stop their eggs from hatching.
Oxygen will get through normal plastic vacuum sealing bags and ruin the taste and eventually nutritional content otherwise after a year or two. Mylar lining stops most of that and the oxygen absorber gets the rest.
The thick bags will also stop rice moths from getting through (they are able to get through most cardboard and thin plastic bags), and the lack of oxygen will stop their eggs from hatching.