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BorinGlass Hex Head Hollow Glass Stopper, (10-Pack) Hexagonal Head Glass Lab Hollow Stopper for 24/40 Standard Taper Joint Stopper Outer Joint Glass with Closed Bottom

Free shipping on orders over $29.99

$34.99

$ 17 .99 $17.99

In Stock

1.Size:24/40 Joint


  • Borosilicate glass; heavy duty design; reusable
  • 24/40 Outer Joint; hollow glass stopper with flat hexagonal head prevents rolling when placed
  • Compatible for laboratory glassware such as flasks and separatory funnels
  • Convenient to clean and rotate, and side grooves can prevent slippage
  • Guaranteed after-sales service: if received defective or damaged item, please contact us. We will definitely help you solve the problem until you are satisfied


Limited Warranty: 1-month hassle-free and 1-year limited warranty.
Friendly reminder: glassware products may be fragile during transit. If received defective or damaged item, please contact our support team for help. No matter a replacement or a full refund for the damaged item, we are willing to take care of it for you in a timely manner.


Lisa Y
Reviewed in the United States on February 7, 2024
I'm really happy with these stoppers, they are made really well. They're thick through and through and do not feel chinchy in any way, shape or form. Make sure to measure your inner diameter of the products well though as there are two sizes offered. I wish I had gotten the smaller size now because I think I could've used those for more things, but the larger size is working out well for me thus far also. I am actually using them to enclose vases I have. It adds a nice touch with the enclosure there.
Max Chooch
Reviewed in the United States on November 16, 2024
None came broken and they all seem to do their job just fine
Reviewer
Reviewed in the United States on January 23, 2024
They seem like good quality, basic stoppers. The ground glass area appears to be properly finished and rounded, and all were received intact and fit in my 24/40 flask ok. The bottom is also enclosed so that you don't have to worry about cleaning any residue from the inside of the stopper when washing and reusing them.
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