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1. The StonyLab means high-quality products for reasonable prices.
2. We boast excellent customer service with a high satisfaction rating, with our team of representatives ready to assist you Monday to Friday, from 9:30AM to 5:30PM Eastern Time.
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Description
Our StonyLab White Rubber Stoppers provide exceptional seal for many applications. Fits all StonyLab / Labasics erlenmeyer flask
Please read the dimension description image carefully before making a decision (might have 1mm measurement error)
Exhibit excellent resilience and retain pliability over a long period
Please note these rubber stoppers are NOT food grade
StonyLab ensures high quality products and premium customer service. If received damaged, please contact us immediately. We will solve it until satisfied
Woofwoof
Reviewed in the United States on February 8, 2025
The quality is nice - they don't rip, break, or tear. They so far haven't deteriorated from outside weather. I used them to plug holes from a previously installed ladder next to my pool. The plugs fit the ladder holes and the associated water line hole. I have also used them to plug the top of my umbrella stands during the winter while the umbrellas are stored. And i use them as bottle stoppers.There are quite a number of sizes available and it's easy to trim to meet the need for an in-between size.
Steven R. Roth
Reviewed in the United States on July 18, 2024
The color? Pretty white. The shape? Conical frustum. The texture? Tough, but not too tough. I suppose, then, it's the function. Since they're stoppers, I've waited for them to stop, but they just keep going and going and going. That's probably a good thing, since it wouldn't be good if they'd stop stopping, but since they don't actually stop, it's just one of life's ongoing quandaries. Maybe I'll buy some more and see if they've finally stopped. What do YOU think?
Kevin Wilson
Reviewed in the United States on November 25, 2024
Perfect fit for 2000ml erlenmyer flasks
Olbi
Reviewed in Sweden on October 4, 2024
Dessa "korkar" håller vad de lovar. De är av kompakt gummi, så ganska tunga och inte så snygga som vanlig kork, men lättare att hålla rent. Vi använder dem på vattenkaraffer efter att korken börjat mögla.
Tatschke
Reviewed in Germany on September 11, 2023
Sehr gute Qualität, keinerlei Mängel. Hier bestelle ich wieder.
Adrian Kruczynski
Reviewed in the United Kingdom on January 10, 2023
Great seller
Bernard Lehu
Reviewed in France on April 3, 2023
La matière est excellente, le cône parfait permet un coincement efficace.
Debon Panton
Reviewed in the United States on September 8, 2022
Very solid. Unfortunately I did not realize that they are NOT food grade. Hence I have to use them with saran wrap as stoppers for my carboys.
Destiny
Reviewed in the United States on September 29, 2022
Use these with my plastic carboys when making wine.
Mary I. Froemke
Reviewed in the United States on July 25, 2021
Good value & shipped fast. Very much appreciate that the measurements of each size were provided which made it easy to find exactly what I needed. Thankyou!
wayne p
Reviewed in Canada on February 26, 2021
Arrived on time. Perfect fit for the flask. Reasonable price.
Explorer
Reviewed in the United States on May 24, 2020
Not fit for a lab setting. Not deflashed and covered in a grainy residue. I didn't need them for a lab setting and only needed one - which had taken me three tries to finally get the right size - so I deflashed and finished one by hand.
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