10Pcs Silicone Grommets for Mason Jar Fermentation Airlock Lids

Size: External diameter: approx. 15mm/0.6". Internal diameter: approx. 8mm/0.3", Height: approx. 8mm/0.3"

Set Include: 10x Grommets Condition: Brand New Material: Silicone Color: Black(as pictures show)

Features: Silicone Grommets for Mason Jar Fermentation Airlock Lids. Made of thicker silicone, BPA free, durable and long lasting. The washer will help maintain the ferment for a longer period. An airlock can be inserted in the grommet, fits airlock perfectly. Work with the airlock, makes a perfect air-tight seal to keep bugs/bacteria/oxygen from getting in your fermenter.

Friendly Tips: The size is measured by hands, please allow minor error of measurement. Photo color might be a little different from the actual product due to color display of different monitors. Label: Yes