Cork & Rubber Tapered Stoppers

Cork Stoppers & Rubber Bungs

Tall Tapered Stopper
=
An Airtight Seal

Solid, tapered natural cork stoppers and rubber bungs for test tubes, Erlenmeyer flasks, Florence flasks, plugging pipes, leaks & more.

All Indigo corks are made in Portugal to the highest standards for materials & cleanliness. Don't be tempted by short, cheap aggregates made from scraps that eventually fall apart after machine washing. Natural cork is fully autoclaveable & the material of choice for culturing needs in labs & home brewing.

What Our Customers Say on Google:

Great service! I forgot to order the corks with my tubes...they had them shipped out that day..arrived at my door within 4 days! WOW! Great company to deal with...
Read the full Review by Lindsay M.

Tapered Cork Stoppers & Rubber Bungs

  • Tapered cork stoppers ensure airtight seals for cigars, spices and keep liquid culture media sterile after autoclaving.
  • Rubber stoppers can be used with non-food items but should be washed in hot soapy water before use with food.
  • A secure fit with our stoppers is only guaranteed with our glassware due to different specifications & tolerances.

**Check the size specifications table under Technical to make sure our stoppers will work with your glassware or other applications.

Cork Stoppers

The one-piece tapered cork on the left fits tightly & is autoclaveable. The agglomerate on the right is glued together bits & won't last.
Displaying 1 to 17 (of 17 products)
#2 Cork Fits ~7/16" Hole

#2 Cork Fits ~7/16" Hole

SKU: 33734-2
$0.07USD or lower Each
#5 Cork Fits ~5/8" Hole

#5 Cork Fits ~5/8" Hole

SKU: 33734-5
$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
$0.42USD 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
$1.00USD or lower Each
#18 Cork Fits ~1 3/8" Hole

#18 Cork Fits ~1 3/8" Hole

SKU: 33734-18
$1.30USD or lower Each
#19 Cork Fits ~1 7/16" Hole

#19 Cork Fits ~1 7/16" Hole

SKU: 33734-19
$1.35USD 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
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

 

Cork Documentation
 

Safety Data Sheet 1 Safety Data Sheet 2 Technical Data Sheet
Magnet Technical Diagram MSDS ROHS