Black Propylene Screw Caps provided by STE-Mart offer excellent sealing performance.
Specification
Material: USP Type 1 borosilicate glass Total volume: 4.0 mL Dimensions: 15*45 mm Openings: 13-425 screw top Bottom style: flat bottom Description: Black propylene screw caps with red PTFE/white silicone/red PTFE septa, 8.5mm hole Qty.: 100/PK