Nalgene DS3132 Oak Ridge Polypropylene Centrifuge Tube Sealing Caps. Oak Ridge Style sealing caps ensure leakproof service of NALGENE centrifuge tubes and bottles at their recommended maximum speeds (10,000 x g or greater), even when full. Polypropylene Screw Closure with silicone gasket. Also recommended for spinning hazardous materials compatible with centrifuge tube or bottle material. Before autoclaving, set closure on top of the container without engaging the threads.
Closure (mm): 63 Fits: 500mL and 1L Tubes