By combining the physical properties of Portland Cement with the strength of mineralized wood fibers, ARMOROCÂ® is ideally suited for all applications where durability and fire-resistance are a concern.
6-8 Months. Of course, all foods last for a shorter period of time if they are not stored properly. But, like many other products, tortillas usually have a best by date which is simply the last date by which a manufacturer will vouch for a product's quality, not its safety.
Tortillas can last more than three times longer if they are refrigerated after they are purchased. According to the Mission website, when left unopened, tortillas have a shelf life of 60 to 90 days if refrigerated compared to only 14 to 35 days if left in ambient temperature.