🔍 Elevate Your Lab Game with Style!
The YMLAB Penny Head Glass Stopper Lab Caps come in a set of 5, designed for a 24/40 joint. Made from durable borosilicate glass, these stoppers are lightweight yet strong, minimizing the risk of chipping and breakage. Their penny head design ensures comfortable handling, making them an essential addition to any laboratory or experimental setup.
J**E
These are hollow, fit well: Be sure to grease or teflon tape
Well made. I've had two of these stick pretty hard despite the use of some high quality vacuum grease. This can apply whether or not you are using them for vacuum applications. The one that stuck hardest (required hours of soaking in very soapy water) stuck instantly when I inserted it into a 3-neck flask and I knew I had a project once I was done.So, use "more" vacuum grease or sulfuric acid or whatever, or use teflon plumber's tape wrapped carefully. I kinda recommend the latter as you have potential contamination to be concerned about.But, recommended. Sticking is not this product's problem, just lab technique or (my careless) lack of it.
F**
Seals good
Perfect
Trustpilot
1 month ago
3 weeks ago
