Cork & Rubber Tapered Stoppers

Tapered cork and rubber stoppers for test tubes, flasks or plugging leaks. Save when bundled with test tubesErlenmeyer or Florence flasks.

Stoppers are used to seal glass test tubes and other types of glass to keep out airborne contaminents.

Cork stoppers are suitable for sealing off most dry materials such as cigars or spices and water based liquids.

Q: Are these corks food safe?
A: The corks are from Portugal & are food safe. They only differ from wine corks in that they are tapered so they are reusable with test tubes.

Rubber stoppers are better if an airtight seal is required. They should be washed in hot soapy water before use with food.

Displaying 1 to 19 (of 19 products)
#2 Cork Fits ~7/16" Hole

#2 Cork Fits ~7/16" Hole

SKU: 33734-2
$0.10USD or lower Each
#3 Cork Fits ~1/2" Hole

#3 Cork Fits ~1/2" Hole

SKU: 33734-3
$0.10USD or lower Each
#5 Cork Fits ~5/8" Hole

#5 Cork Fits ~5/8" Hole

SKU: 33734-5
$0.12USD or lower Each
#6 Cork Fits ~11/16" Hole

#6 Cork Fits ~11/16" Hole

SKU: 33734-6
$0.12USD or lower Each
Cork Stopper #7

Cork Stopper #7

SKU: 33734-7
$0.14USD or lower Each
#9 Cork Fits ~7/8" Hole

#9 Cork Fits ~7/8" Hole

SKU: 33734-9
$0.30USD or lower Each
#10 Cork Fits ~7/8" Hole

#10 Cork Fits ~7/8" Hole

SKU: 33734-10
$0.40USD or lower Each
#15 Cork Fits ~1 3/16" Hole

#15 Cork Fits ~1 3/16" Hole

SKU: 33734-15
$0.80USD or lower Each
#16 Cork Fits~1 1/4" Hole

#16 Cork Fits~1 1/4" Hole

SKU: 33734-16
$0.90USD or lower Each
#17 Cork Fits ~1 5/16" Hole

#17 Cork Fits ~1 5/16" Hole

SKU: 33734-17
$1.05USD or lower Each
#18 Cork Fits ~1 3/8" Hole

#18 Cork Fits ~1 3/8" Hole

SKU: 33734-18
$1.15USD or lower Each
#19 Cork Fits ~1 7/16" Hole

#19 Cork Fits ~1 7/16" Hole

SKU: 33734-19
$1.25USD or lower Each
#24 Cork Fits ~1.75" Hole

#24 Cork Fits ~1.75" Hole

SKU: 33734-24
$3.00USD or lower Each
Rubber Stopper #00

Rubber Stopper #00

SKU: 33720-00
$0.30USD or lower Each
Rubber Stopper #1

Rubber Stopper #1

SKU: 33721
$0.40USD or lower Each
Rubber Stopper #4

Rubber Stopper #4

SKU: 33724
$0.60USD or lower Each
Rubber Stopper #6

Rubber Stopper #6

SKU: 33726
$1.20USD or lower Each
Rubber Stopper #8

Rubber Stopper #8

SKU: 33728
$1.80USD or lower Each
Rubber Stopper #9

Rubber Stopper #9

SKU: 33729
$2.00USD or lower Each
More Information

Please note that we can only guarantee that the rubber & cork stoppers fit our glassware properly since different supplier habe different specifications & tolerances.

Check the specifcations table under Technical to make sure our sizes will work with your glassware or other applications.

You can also see images of cork cells which you are free to use for educational purposes.

Technical

Dimensions of Rubber Stoppers

There are: ~25mm/inch
Size Height (mm) Top Diameter (mm) Bottom Diameter(mm) Average Diameter(in)
#00 25 14 10 TBD
#1 25 19 14 TBD
#4 25 26 20 TBD
#6 25 32 26 TBD
#8 29 41 33 TBD

 

Dimensions of Cork Stoppers

There are: ~25mm/inch
Size Height (mm) Top Diameter (mm) Bottom Diameter(mm) Average Diameter(in)
#2 17.5 12.7 9.6 ~7/16
#3 12.7 14.3 11.0 ~1/2
#4 20.6 15.9 11.9 ~9/16
#5 22.0 17.5 13.5 ~5/8
#6 23.8 19.0 14.7 ~11/16
#7 25.4 20.6 15.9 ~3/4
#8 27.0 22.2 17.1 ~13/16
#9 28.6 22.2 17.1 ~7/8
#10 31.8 25.4 19.4 ~7/8
#11 31.8 27.0 21.0 ~15/16
#15 31.8 32.4 27 ~1 3/16
#16 37.4 34.7 27.6 ~1 1/4
#17 38.1 36.5 29.4 ~1 5/16
#18 38.1 38.1 30.9 ~1 3/8
#19 38.1 39.7 32.5 ~1 7/16
#24 38.1 47.5 40.4 ~1 3/4