United Scientific Supplies One Hole Rubber Stoppers

These black stoppers are made of solid natural rubber that stays pliable over a long period of time. Ideal for use with nonagressive or concentrated solutions. Low sulfur content. Withstands temperatures from -13 to 158°F (-25 to 70°C). Each stopper has its size marked in raised figures. Sold as one-pound bags.
Image(s) are representative of the product group and not necessarily the individual product.

Stopper Size: 000
Approx. No. per lb.: 170
Top Diameter (mm): 13
Bottom Diameter (mm): 8
Hole Size (mm): 3

Stopper Size: 00
Approx. No. per lb.: 90
Top Diameter (mm): 15
Bottom Diameter (mm): 10
Hole Size (mm): 3

Stopper Size: 0
Approx. No. per lb.: 63
Top Diameter (mm): 17
Bottom Diameter (mm): 13
Hole Size (mm): 3

Stopper Size: 1
Approx. No. per lb.: 52
Top Diameter (mm): 19
Bottom Diameter (mm): 14
Hole Size (mm): 4

Stopper Size: 3
Approx. No. per lb.: 33
Top Diameter (mm): 24
Bottom Diameter (mm): 18
Hole Size (mm): 5

Stopper Size: 4
Approx. No. per lb.: 28
Top Diameter (mm): 26
Bottom Diameter (mm): 20
Hole Size (mm): 5

Stopper Size: 5
Approx. No. per lb.: 24
Top Diameter (mm): 27
Bottom Diameter (mm): 23
Hole Size (mm): 5

Stopper Size: 5¹/₂
Approx. No. per lb.: 21
Top Diameter (mm): 28
Bottom Diameter (mm): 24
Hole Size (mm): 5

Stopper Size: 6
Approx. No. per lb.: 18
Top Diameter (mm): 32
Bottom Diameter (mm): 26
Hole Size (mm): 5

Stopper Size: 6¹/₂
Approx. No. per lb.: 16
Top Diameter (mm): 34
Bottom Diameter (mm): 27
Hole Size (mm): 5

Stopper Size: 7
Approx. No. per lb.: 13
Top Diameter (mm): 37
Bottom Diameter (mm): 30
Hole Size (mm): 5

Stopper Size: 7¹/₂
Approx. No. per lb.: 13
Top Diameter (mm): 39
Bottom Diameter (mm): 31
Hole Size (mm): 5

Stopper Size: 8
Approx. No. per lb.: 10
Top Diameter (mm): 41
Bottom Diameter (mm): 33
Hole Size (mm): 5

Stopper Size: 8¹/₂
Approx. No. per lb.: 10
Top Diameter (mm): 43
Bottom Diameter (mm): 36
Hole Size (mm): 5

Stopper Size: 9
Approx. No. per lb.: 9
Top Diameter (mm): 45
Bottom Diameter (mm): 37
Hole Size (mm): 5

Stopper Size: 9¹/₂
Approx. No. per lb.: 9
Top Diameter (mm): 46
Bottom Diameter (mm): 38
Hole Size (mm): 5

Stopper Size: 10
Approx. No. per lb.: 7
Top Diameter (mm): 50
Bottom Diameter (mm): 42
Hole Size (mm): 5

Stopper Size: 10¹/₂
Approx. No. per lb.: 7
Top Diameter (mm): 53
Bottom Diameter (mm): 45
Hole Size (mm): 5

Stopper Size: 11
Approx. No. per lb.: 6
Top Diameter (mm): 56
Bottom Diameter (mm): 48
Hole Size (mm): 5

Stopper Size: 11¹/₂
Approx. No. per lb.: 6
Top Diameter (mm): 63
Bottom Diameter (mm): 50
Hole Size (mm): 5

Stopper Size: 13
Approx. No. per lb.: 4
Top Diameter (mm): 68
Bottom Diameter (mm): 58
Hole Size (mm): 5

Stopper Size: 13
Approx. No. per lb.: 5
Top Diameter (mm): 64
Bottom Diameter (mm): 54
Hole Size (mm): 5

Stopper Size: 14
Approx. No. per lb.: 1
Top Diameter (mm): 90
Bottom Diameter (mm): 75
Hole Size (mm): 5

Stopper Size: 15
Approx. No. per lb.: 1
Top Diameter (mm): 103
Bottom Diameter (mm): 83
Hole Size (mm): 5

Stopper Size: 16
Approx. No. per lb.: 1
Top Diameter (mm): 127
Bottom Diameter (mm): 90
Hole Size (mm): 5