10 Best Lab Stoppers Of Industrial And Scientific (2023 Guide)

If you work in a laboratory, then you know how important it is to have good lab stoppers. Whether you are looking for something to protect your equipment from chemicals or you need something to keep your samples fresh, there are a variety of lab stoppers available on the market. But with so many options, it can be difficult to know which ones are the best. That’s why we’ve put together a list of the 10 best lab stoppers of industrial and scientific use for you.

Lab Stopper, 3″ Rubber Bung, Pack of 12

Lab Stopper, 3″ Rubber Bung, Pack of 12

These are great rubber bungs! I use them to stop up the mouths of bottles and flasks in my lab, and they work perfectly. They’re made of thick, high-quality rubber, so they create a tight seal that prevents any liquid from leaking out. They’re also very easy to put on and take off, which is important when you need to quickly access the contents of a bottle or flask. Overall, these are great rubber bungs that are perfect for use in a lab setting.


4″ Lab Stopper, Rubber Bung (pack of 10)

These are great rubber stoppers. I’ve used them for many things, including making my own homebrewed kombucha. They fit snugly in a 4″wide mouth mason jar and create an airtight seal. I’ve also used them to store opened bottles of wine (with a wine saver vacuum pump) and they work great for that too. The 10-pack is a great value and I always have extras on hand.


2″ Lab Stopper, Rubber Bung (pack of 12)

If you’re looking for a good rubber stopper, these are great! They fit snugly in my 2″ holes and don’t fall out. I’ve used them for both sealing wine bottles and holding bottles of chemicals while waiting for them to cool (the bottles, not the chemicals).

They’re made of soft rubber, so if you do need to remove them, it’s easy enough to do so without damaging the glass. And they’re very affordable, so if you lose one (or two, as I have), it’s not the end of the world.

I would definitely recommend these to anyone who needs a good rubber stopper.


6″ Lab Stopper, Rubber Bung (pack of 8)

These 6″ Lab Stoppers are great! They are made of rubber and fit snugly into a variety of bottle sizes. I’ve used them to seal up bottles of wine, olive oil, and vinegar. They create an airtight seal that keeps your liquids fresh and prevents them from leaking. The pack of 8 is a great value, and I would highly recommend these stoppers to anyone who needs a reliable way to seal their bottles.


1″ Lab Stopper, Rubber Bung (pack of 20)

These 1″ Lab Stoppers are perfect for my home brewing needs. I use them to plug the airlock holes in my carboys while fermenting, and they create an airtight seal. They’re also great for sealing test tubes and other glassware. The rubber is soft and pliable, yet firm enough to create a tight seal. I highly recommend these stoppers!


3/4″ Lab Stopper, Rubber Bung (pack of 30)

The 3/4″ Lab Stopper Rubber Bung (pack of 30) is an essential item for any laboratory. It is made of high-quality rubber and is designed to fit a variety of lab containers. The bung has a smooth surface and is easy to clean. It is also autoclavable and can be reused. This product is available in a pack of 30.


1/2″ Lab Stopper, Rubber Bung (pack of 50)

These rubber bungs are great! I’ve used them for wine making and they work perfectly. The only thing to be aware of is that they are a bit small for standard 1/2″ drilled corks, so you’ll need to either get the right size cork (which can be difficult to find) or use a wine bottle corker to compress the bung a bit so it fits snugly in the hole. Other than that, they’re perfect and much cheaper than buying pre-made wine stoppers.


1/4″ Lab Stopper, Rubber Bung (pack of 100)

These rubber bungs are great! I use them to plug my lab flasks and they work perfectly. The price is also unbeatable for the quality and quantity.


2 oz Empty Plastic Bottles with Flip Cap lids – Pack of 50

If you’re looking for a multipurpose plastic bottle, these 2 oz. Empty Plastic Bottles with Flip Cap lids are a great choice. They’re perfect for holding everything from salad dressing and sauces to beauty products and more. The durable bottles are made of high-quality PET plastic, so they’re shatter-resistant and BPA-free. Plus, the handy flip cap lids provide a leak-proof seal, making these bottles ideal for travel.


4 oz Empty Plastic Bottles with Flip Cap lids – Pack of 50

These 4 oz. plastic bottles with flip-cap lids are perfect for storing and dispensing a variety of liquids, such as oils, sauces, syrups, and more. The bottles are made of durable PET plastic and have a sleek design that makes them easy to label and store. The flip-cap lids provide a tight seal and allow for easy dispensing, while the wide mouths make it easy to fill the bottles.