Features NASA-inspired technology Airtight Watertight Great for storing knick-knacks, medicine, or small valuables Resists UV rays The Time Capsule is a consumer storage device inspired by NASA biological research. The jar is completely air and water tight, and resists normal pressurization. The supersized screw thread and silicone rubber seal guarantee that materials you place inside the container are well protected from outside elements. Made with an advanced polymer that is strong and resists UV rays.