Glass A-1

The primary purpose of a rubber stopper is to prevent a gas or liquid from escaping its container during a scientific experiment. Rubber stoppers can also prevent the contamination of samples by protecting the contents of laboratory glassware from air. Last, the use of rubber stoppers allows experimenters to shake or mix solutions without spilling them.

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Part NO. in millimeters Diameter of Hole A B C 1 Hole 2 Hole 000 9 12 18 3   00 10 15 25 3 3 0 13 17 25 3 3 1 14 19 25 4 4 2 16 20 25 5 5 3 18 24 25 5 5 4 20 26 25 5 5 5 23 27 25 5 5 5.5 24 28 25 5 5 6 26 32 25 5 5 6.5 27 34 25 5 5 7 30 37 25 5 5 7.5 31 39 25 5 5 8 33 41 25 5 5 8.5 36 43 25 5 5 9 37 45 25 5 5 9.5 38 46 25 5 5 10 42 50 25 5 5 10.5 45 53 25 5 5 11 48 56 25 5 5 11.5 50 63 25 5 5 12 54 65 25 5 5 13 58 68 25 5 5 13.5 62 75 35 5 5 14 75 90 39 5 5 15 83 103 39 5 5 16 90 127 50 5 5