rubber stoppers

All dimensions in the table are in millimeters. The last column gives the diameter of the holes in either 1-hole or 2-hole stoppers.

Size	Top diameter	Bottom diameter	Length	Hole diameter
00	15	10	26	3
0	17	13	26	3
1	19	15	26	4
2	20	16	26	5
3	24	18	26	5
4	26	20	26	5
5	27	23	26	5
5½	29	25	26	5
6	32	26	26	5
6½	34	27	26	5
7	37	30	26	5
8	41	33	26	5
9	45	37	26	5
10	50	42	26	5
10½	53	45	26	5
11	56	48	26	5
11½	60	51	26	5
12	64	54	26	5
13	67	58	26	5
14	90	75	39	5
15	103	83	39	5

In addition to the above standard sizes, special rubber stoppers are made to fit particular pieces of glassware. Often these have the same top and bottom diameters as a standard size, but are longer.

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