Nalgene® Continous Thread Serum Vial Screw Caps

These continuous-thread lined serum vial screw caps are made from HDPE Plastic and are designed specifically for Nalgene® continuous-thread serum vials. (See Nalgene 322032 and 342032 Series.) These serum vial screw caps have three-ply co-extruded liner with a low-density polyethylene (LDPE) core between two facings of solid HDPE that eliminates the need for a rubber stopper. Serum vial screw caps are leakproof and sterile to a 10-6 Sterility Assurance Level (SAL). Vials are sold separately. Nalgene 312158 and 342158 Series.