Micronic Screw Caps for internally threaded tubes securely seal tubes for long-term sample storage at ultra-low temperatures. To meet the diverse needs of different researchers, Micronic offers a range of sealing solutions. Internally threaded tubes can be sealed with a standard Screw Cap, a Screw Cap Ultra, or a Low Profile Screw Cap. The Micronic Screw Caps for tubes with an internal thread feature a high quality Silicon O-ring around the base to allow for the tightest seal possible. The Micronic Screw Caps for tubes with an internal and external thread are available in 12 different colors.
