101 Rubber Stopper Sizes - www.101science.com

Stopper #	Top Dimension	Bottom Dimension
#000	13mm	8mm
#00	15mm	10mm
#0	17mm	13mm
#1	19mm	14mm
#2	20mm	16mm
#3	24mm	18mm
#4	26mm	20mm
#5	27mm	23mm
#6	32mm	26mm
#7	37mm	30mm
#8	41mm	33mm
#9	45mm	37mm
#10	50mm	42mm
#11	56mm	48mm
#12	64mm	54mm
#13	68mm	58mm
#14	90mm	75mm
#15	100mm	81mm

*To convert mm to inches divide by 25.4. There are 25.4mm per inch.

mm	Inches
mm	Decimal	Nearest Fraction
0.1	0.003937008	1/256
0.2	0.007874016	1/128
0.3	0.011811024	3/256
0.4	0.015748031	1/64
0.5	0.019685039	3/128
0.6	0.023622047	3/128
0.7	0.027559055	7/256
0.8	0.031496063	1/32
0.9	0.035433071	9/256
1	0.039370079	5/128
1.3	0.051181102	13/256
1.5	0.059055118	15/256
1.7	0.066929134	17/256
1.8	0.070866142	9/128
2	0.078740157	5/64
2.2	0.086614173	11/128
2.4	0.094488189	3/32
2.5	0.098425197	25/256
2.7	0.106299213	27/256
2.8	0.11023622	7/64
3	0.118110236	15/128
3.2	0.125984252	1/8
3.4	0.133858268	17/128
3.5	0.137795276	35/256
3.8	0.149606299	19/128
4	0.157480315	5/32
4.1	0.161417323	41/256
4.4	0.173228346	11/64
4.5	0.177165354	23/128
5	0.196850394	25/128
5.5	0.216535433	55/256
6	0.236220472	15/64
6.5	0.255905512	33/128
7	0.275590551	71/256
7.5	0.295275591	19/64
8	0.31496063	81/256
8.5	0.334645669	43/128
9	0.354330709	91/256
9.5	0.374015748	3/8
10	0.393700787	101/256
10.5	0.413385827	53/128
11	0.433070866	111/256
11.5	0.452755906	29/64
12	0.472440945	121/256
12.5	0.492125984	63/128
13	0.511811024	131/256
13.5	0.531496063	17/32
14	0.551181102	141/256
14.5	0.570866142	73/128
15	0.590551181	151/256
16	0.62992126	161/256
17	0.669291339	171/256
18	0.708661417	181/256
19	0.748031496	191/256
20	0.787401575	101/128
21	0.826771654	53/64
22	0.866141732	111/128
23	0.905511811	29/32
24	0.94488189	121/128
25	0.984251969	63/64
25.4	1	1/1

* This conversion statement was previously in error. It has been corrected thanks to Dr. Stanley L. Kaufman, Ph. D., TSI Incorporated.

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