Stopper Caps

Caplugs Evergreen Test Tube Stopper Caps are precision-molded and available in either our standard or flat-top style. Stopper caps are available for every size of Caplugs Evergreen test tube from 8 mm to 17 mm.

• Ideal for use with test tubes
• Standard version is available in a wide variety of colors
• Flat-top version is only available in natural color