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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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Cork Borer, 7mm
Cork Borer, 7mm
Cork, size  2, pack of 2
Cork, size 2, pack of 2
Cork, size  9
Cork, size 9
Cork, size 14
Cork, size 14

$2.95

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

$0.75

Diameter of 12-13 mm. Fits small test tubes.

$0.75

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

$1.20

Diameter of 26-32 mm. Fits 250 ml flasks.
Rubber stopper,  #1, 1-hole
Rubber stopper, #1, 1-hole
Rubber stopper,  #1, 2-hole
Rubber stopper, #1, 2-hole
Rubber stopper,  #1, solid
Rubber stopper, #1, solid
Rubber stopper,  #3, 1-hole
Rubber stopper, #3, 1-hole

$0.35

These #1 rubber stoppers are 14-19 mm diameter with one 4mm diameter hole. ... more

$0.35

These #1 rubber stoppers are 14-19 mm diameter with two 4mm diameter holes.... more

$0.35

These #1 rubber stoppers are 14-19 mm diameter. #1 rubber stoppers fit 50ml... more

$0.45

These #3 rubber stoppers are 18-24 mm diameter with one 5mm diameter hole. ... more
Rubber stopper,  #3, 2-hole
Rubber stopper, #3, 2-hole
Rubber stopper,  #3, solid
Rubber stopper, #3, solid
Rubber stopper,  #6-1/2, 1-hole
Rubber stopper, #6-1/2, 1-hole
Rubber stopper,  #6-1/2, 2-hole
Rubber stopper, #6-1/2, 2-hole

$0.45

These #3 rubber stoppers are 18-24 mm diameter with two 5mm diameter holes.... more

$0.45

These #3 rubber stoppers are 18-24 mm diameter. #3 rubber stoppers fit lite... more

$0.80

These #6-1/2 rubber stoppers are 27-34 mm diameter with one 5mm diameter ho... more

$0.80

These #6-1/2 rubber stoppers are 27-34 mm diameter with two 5mm diameter ho... more
Rubber stopper,  #6-1/2, solid
Rubber stopper, #6-1/2, solid
Rubber stopper,  #8, 1-hole
Rubber stopper, #8, 1-hole
Rubber stopper,  #8, 2-hole
Rubber stopper, #8, 2-hole
Rubber stopper,  #8, solid
Rubber stopper, #8, solid

$0.80

These #6-1/2 rubber stoppers are 27-34 mm diameter. #6-1/2 rubber stoppers ... more

$1.20

These #8 rubber stoppers are 33-41 mm diameter with one 5mm diameter hole. ... more

$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
Rubber stopper, #0, 1-hole
Rubber stopper, #0, 1-hole
Rubber stopper, #0, 2-hole
Rubber stopper, #0, 2-hole
Rubber stopper, #0, solid
Rubber stopper, #0, solid
Rubber stopper, #00, 1-hole
Rubber stopper, #00, 1-hole

$0.35

These #0 rubber stoppers are 13-17 mm diameter with one 3mm diameter hole. ... more

$0.35

These #0 rubber stoppers are 13-17 mm diameter with two 3mm diameter holes.... more

$0.35

These #0 rubber stoppers are 13-17 mm diameter. #0 rubber stoppers fit larg... more

$0.75

These #00 rubber stoppers are 10-15 mm diameter with one 3mm diameter hole.... more
Rubber stopper, #00, 2-hole
Rubber stopper, #00, 2-hole
Rubber stopper, #00, solid
Rubber stopper, #00, solid
Rubber stopper, #10, 2-hole
Rubber stopper, #10, 2-hole

$0.75

These #00 rubber stoppers are 10-15 mm diameter with two 3mm diameter holes... more

$0.75

These #00 rubber stoppers are 10-15 mm diameter. #00 rubber stoppers fit sm... more

$1.60

42-50 mm diameter. Fits many vacuum bottles.
 
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