As the jar with the largest volume that Parkway Plastic offers, the 40 oz jar is ideal for many industries, so if your company needs large jars for shipping, storing, and selling your products, pick up a case today. You can purchase jars in polystyrene, clarified polypropylene, or white polypropylene, and no matter which you choose, you'll see how reliable and durable our jars truly are. You can also find smooth, ribbed, or domed caps for your 40 oz plastic jars, giving you an adequate seal when you're ready to move your products. Jars and Caps are sold separately.