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Rubber Stoppers


Use these sturdy rubber stoppers and 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 stoppers for 250 ml flasks.

Save when you buy 10 or more of one of these stoppers!

 
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Rubber stopper, #8, 2-hole
Rubber stopper, #8, 2-hole 		Rubber stopper, #8, solid
Rubber stopper, #8, solid 		Rubber stopper, #10, 2-hole
Rubber stopper, #10, 2-hole 		Cork, size 2, pack of 2
Cork, size 2, pack of 2

$1.20
These #8 rubber stoppers are 33-41 mm diameter with two 5mm diameter holes.... more

$1.20
These #8 rubber stoppers are 33-41 mm diameter. #8 rubber stoppers fit 500m... more

$1.60
42-50 mm diameter. Fits many vacuum bottles.

$0.75
Diameter of 12-13 mm. Fits small test tubes.
Cork, size 9
Cork, size 9 		Cork, size 14
Cork, size 14 		Cork Borer, 7mm
Cork Borer, 7mm

$0.75
Diameter of 18-24 mm. Fits plastic soda bottles.

$1.20
Diameter of 26-32 mm. Fits 250 ml flasks.

$2.95
This borer is used to make uniform 7mm diameter holes in corks for attachin... more
 
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