Feature：
Can be equipped with Boston glass bottle, using sodium calcium
material, pharmaceutical grade; The bakelite cap has a conical low
density polyethylene plug, which can be used for chemical reagents,
fragrances, essential oils and so on. Professional molding bottle,
laboratory selection of chemical bottle, corrosion resistance, acid and alkali resistance, good sealing.
Easy to hold:
The black phenolic cap has a raised ridge on the entire circumference, which allows the cap to be tightened effortlessly and is easier to hold and seal.
Product specification
Product name: 28mm black Polyethylene sealed screw cap
Cover material: PP
Insert material: PE
Color: Black
Diameter: 28 mm
Height: 12.5 mm
Packaging Includes:28mm black Polyethylene sealed screw cap*12 Tips:
Manual measurement, please allow a slight error in size.
Keep small parts away from children.
To prevent gas or liquid leakage, tighten the cap and maintain good air tightness.