United Scientific Supplies Solid 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 No.: 000
Approx. No. per lb.: 170
Top Diameter (mm): 13
Bottom Diameter (mm): 8

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

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

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

Stopper No.: 2
Approx. No. per lb.: 45
Top Diameter (mm): 20
Bottom Diameter (mm): 16

Stopper No.: 3
Approx. No. per lb.: 33
Top Diameter (mm): 24
Bottom Diameter (mm): 187

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Stopper No.: 12
Approx. No. per lb.: 5
Top Diameter (mm): 64
Bottom Diameter (mm): 54

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

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

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

Stopper No.: 16
Approx. No. per lb.: 1
Top Diameter (mm): 127
Bottom Diameter (mm): 90
Height (mm): 25