When do black oil sunflower seeds expire?

Black oil sunflower seeds typically have a shelf life of about 6 to 12 months when stored properly in a cool, dry place. If kept in airtight containers away from light and moisture, they can last longer. Always check for signs of spoilage, such as an off smell or rancidity, before use. For best quality, it's advisable to use them within a year of purchase.