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Rubber Stoppers & Corks
Use these sturdy rubber stoppers and lab-grade corks to contain liquids in test tubes and flasks. They fit tightly to prevent chemical leaks. Our 5 mm glass tubing fits in the one- or two-hole rubber stoppers. For small test tubes use #00 stoppers. Use #0 for large test tubes, and #1 for extra large. Use #6.5 stoppers for 250 ml flasks. Use a cork borer to drill holes in the corks.
Use our quick & easy guide to buying corks & rubber stoppers.
Save when you buy 10 or more of one of these stoppers!
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1 2 3 4  (Of 4) View All
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Rubber stopper, #00, solid
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Rubber stopper, #00, 1-hole
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Rubber stopper, #00, 2-hole
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Rubber stopper assortment pack 2 lbs, #00 to #8
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$0.80
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These #00 rubber stoppers are 10-15 mm diameter. #00 rubber stoppers fit sm... more
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$0.80
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These #00 rubber stoppers are 10-15 mm diameter with one 3mm diameter hole.... more
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$0.80
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These #00 rubber stoppers are 10-15 mm diameter with two 3mm diameter holes... more
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$16.95
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You will always have the right size rubber stopper on hand with this 2 lb p... more
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Cork Borers, Set of 6, 5 mm - 11 mm
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Rubber stopper, #0, solid
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Rubber stopper, #0, 1-hole
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Rubber stopper, #0, 2-hole
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$10.95
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This set of six cork borers allows you to make uniform holes in rubbers sto... more
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$0.35
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These #0 rubber stoppers are 13-17 mm diameter. #0 rubber stoppers fit larg... more
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$0.35
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These #0 rubber stoppers are 13-17 mm diameter with one 3 mm diameter hole.... more
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$0.35
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These #0 rubber stoppers are 13-17 mm diameter with two 3 mm diameter holes... more
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Corks, No. 2, 10 pack
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Rubber stopper, #1, solid
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Rubber stopper, #1, 1-hole
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Rubber stopper, #1, 2-hole
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$1.25
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These No. 2 lab-grade corks fit our small 13 mm x 100 mm test tubes.
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$0.35
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These #1 rubber stoppers are 14-19 mm diameter. #1 rubber stoppers fit 50ml... more
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$0.35
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These #1 rubber stoppers are 14-19 mm diameter with one 5mm diameter hole. ... more
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$0.35
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These #1 rubber stoppers are 14-19 mm diameter with two 4mm diameter holes.... more
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| Sort By: Best Selling | A - Z | Price | Newest | Top Rated
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1 2 3 4 (Of 4) View All
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