Rubber Stopper Size Guide

Need help working out what size rubber stopper you need for your glassware? This rubber stopper size chart will help you match them up. You can also browse our full range of beakers, flasks and test tubes.

Rubber Stoppers (all sizes in mm)
Size Holes Top Bottom Height For Use With
0 Solid 12 9 16
1 Solid 13 10 20
2 Solid 16 13.5 17 18x150mm Test Tubes
25ml Narrow Mouth Erlenmeyer Flask
3 Solid 18 15 19 18x180mm Test Tubes
4 Solid 20 15 22
6 Solid 23 17 23 25ml Wide Mouth Erlenmeyer Flasks
50ml Narrow Mouth Erlenmeyer Flask
7 Solid 26 21 29 25x200mm Test Tubes
8 Solid 27 22 28 100ml Narrow Mouth Erlenmeyer Flask
9 Solid 29 24 29
10 Solid 33 27 30 50ml Wide Mouth Erlenmeyer Flask
250ml Narrow Mouth Erlenmeyer Flask
10 1 Hole 33 27 30 50ml Wide Mouth Erlenmeyer Flask
250ml Narrow Mouth Erlenmeyer Flask
11 Solid 34 30 31 500ml Narrow Mouth Erlenmeyer Flask
12 Solid 36 31 31 100ml Wide Mouth Erlenmeyer Flask
13 Solid 39 34 31 1000ml Narrow Mouth Erlenmeyer Flask
14 Solid 41 36 31
16 Solid 47 39 36 3000ml Narrow Mouth Erlenmeyer Flask
17 Solid 48 42 38 1000ml Wide Mouth Erlenmeyer Flask
2000ml Narrow Mouth Erlenmeyer Flask
18 Solid 51 45 40 500ml Wide Mouth Erlenmeyer Flask
20 Solid 59 50 41
22 Solid 65 57 41 5000ml Narrow Mouth Erlenmeyer Flask