Autosampler Vials, Caps, and Closures. Thermo Scientific™ 8mm Clear Glass Screw Thread Vials. These 8mm vials have a 8-425 thread finish. They are manufactured from high-quality glass and fit a variety of autosamplers. Pricing and Availability. Fisherbrand™ Manual Crimper, Steel, for Flip Top/Flip Off Seals or Flip Tear Up Seals.