2pcs Silicone Stopper Acid Resistant Airlock Lid Lab Test Tube Stopper

Description:

Made of food-safe grade silicone, environmental-friendly and non-toxic

Able to be sterilized at very high temperature over 100 Degrees Celsius due to its silicone material feature

Perfect acid, alkari and corrosion resistant, better than any other rubber or plastic stoppers

Ideal for , household, and industrial use, various demensions to prevent oxygen from wreaking havoc with your fermenting process

Smooth and tapered sides designed for exceptional sealing and optimal fit with a wide range of openings, easy to plug in or pull out, creating an airtight seal

Specification:

Please note that the "20-25mm" is referring to the appliacable glass container' opening diameter range. For example, 20-25mm stopper adapts to the wine bottles' opening of 20mm to 25mm diameter.

27-32mm:

Height: 46mm/ 1.8inch; Top diameter: 32mm/ 1.3inch; Bottom diameter: 27mm/ 1.1inch

29-35mm:

Height: 47mm/ 1.9inch; Top diameter: 35mm/ 1.4inch; Bottom diameter: 29mm/ 1.2inch

Package Includes:

2 Pieces glassware stopper

Note:

Please allow 1-2 mm inaccuracy due to manual measurement. Thanks.

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