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Your cart is empty.One-pound bag of solid black rubber stoppers, sizes 00 to 7. Made of natural rubber that stays pliable over a long period of time. Ideal for use with non-aggressive or concentrated solutions. Low sulfur content. Will withstand temperatures from –25°C to 70°C (–13°F to 158°F). Autoclavable.
Stella
Reviewed in the United States on September 7, 2024
Good variety of sizes, however only received 35 stoppers when the description said 50.
B P
Reviewed in Canada on September 29, 2024
Worked to plug a live well drain hole in boat
Janie Laroche
Reviewed in Canada on August 11, 2024
Tous les formats sont pratiques.Bon prix de lot
Herbert
Reviewed in Canada on October 21, 2024
Excellent choices
LesliE
Reviewed in Canada on May 5, 2023
A bit smelly but most rubber is.I would have liked more of the largest sizes.I’m happy and would recommend them.
Kathy Stewart
Reviewed in the United States on October 1, 2023
This is a great product but the description says 1 pound/ 50 count bag of stoppers. It doesn’t say 1 pound OR 50 count. Received 36 stoppers.
Sean A - Toronto
Reviewed in Canada on December 31, 2022
Exactly as advertised. High quality, good selection … wouldn’t hesitate to order again.
Douglas H
Reviewed in the United States on June 8, 2020
Used these to plug holes in a tank while cleaning it. Good variety of sizes, rubber flexible, excellent value
PT
Reviewed in the United States on May 16, 2020
They are rubber corks meant for science, but we used them for something different. In building a portable solar generator (DIY Goal Zero Yeti 400) I was trying to find a way to secure the bettery inside of the plastic ammo box used for the generator housing to attach everything to and needed a way to protect the battery from the screws protruding in from attaching things to the outside of the box.I screwed the charge controller and inverter on opposite sides of the box and used these rubber pieces to screw onto the back of the pointy end of the screw inside the box.This worked great not only to protect the battery from the screws, but they also happened to be the exact right size to where the battery slips in the box, snuggly right between the rubber bumpers with no modification using a 396wh battery.Sometimes you need to think outside the box and this worked perfectly for what I needed them for!
Drue
Reviewed in the United States on October 17, 2020
Delivery was fine, no damage. The only thing was I was looking for a smaller size stopper, but Now I have a good selection for other applications.
TRJ
Reviewed in the United States on December 10, 2019
I couldn't believe how many stoppers and how many different sizes that I received for such a reasonable price. They did a great job on the project which I was doing.
PDMc
Reviewed in the United States on April 11, 2019
Good quality stoppers. Very nice. Good assortment. I bought three different brands and these were the best of the batch. Don't let anything ~stop~ you from buying these. ;)
Raining-Roses
Reviewed in the United States on August 16, 2018
Works great. I used it for an object lesson experiment with a flask and filter. I gave it 4 stars only because I only needed one stopper but couldn’t find it in smaller quantities.
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