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.
Since different companies use different preservatives, there is variation in how long they last. Tortillas, which begin very pliable, will begin to get stiffer when they are getting old.