About Tubing

Metric Hypodermic Tubing Gage Chart

(all dimensions in millimeters)


RW: Regular Wall | TW: Thin Wall | XTW: Extra Thin Wall
More Sizes and Wall Thicknesses Available

GAGE SIZE
NOM. OD OD RANGE NOM. WALL NOM. ID
ID RANGE
6RW
5.15 5.13/5.18 .381 4.39 4.32/4.47
7RW
4.57 4.57/4.60 .381 3.81 3.73/3.89
8RW
4.19 4.17/4.22 .381 3.43 3.35/3.51
9RW
3.76 3.74/3.78 .381 3.00 2.92/3.07
10RW
3.40 3.38/3.43 .356 2.69 2.64/2.74
11RW
3.05 3.02/3.07 .330 2.39 2.34/2.44
11TW
3.02 3.02/3.07 .254 2.54 2.49/2.59
12RW
2.77 2.74/2.79 .305 2.16 2.11/2.21
12TW
2.77 2.74/2.79 .229 2.31 2.26/2.36
13RW
2.41 2.39/2.44 .305 1.80 1.75/1.85
13TW
2.41 2.39/2.44 .229 1.96 1.91/2.01
13XTW
2.41 2.39/2.44 .127 2.16 2.11/2.21
14RW
2.11 2.08/2.13 .254 1.60 1.55/1.65
14TW
2.11 2.08/2.13 .203 1.70 1.68/1.74
14XTW
2.11 2.08/2.13 .140 1.83 1.80/1.85
15RW
1.83 1.82/1.84 .229 1.37 1.33/1.41
15TW
1.83 1.82/1.84 .152 1.52 1.51/1.56
15XTW
1.83 1.82/1.84 .114 1.59 1.56/1.62
16RW
1.65 1.64/1.66 .229 1.19 1.16/1.23
16TW
1.65 1.64/1.66 .152 1.36 1.33/1.38
16XTW
1.65 1.64/1.66 .114 1.41 1.38/1.44
17RW
1.47 1.46/1.49 .203 1.07 1.03/1.10
17TW
1.47 1.46/1.49 .127 1.21 1.18/1.23
17XTW
1.47 1.46/1.49 .102 1.27 1.24/1.30
18RW
1.27 1.26/1.28 .216 0.84 0.80/0.88
18TW
1.27 1.26/1.28 .152 0.98 .095/1.00
18XTW
1.27 1.26/1.28 .101 1.07 1.04/1.09
GAGE SIZE
NOM. OD OD RANGE NOM. WALL NOM. ID
ID RANGE
19RW
1.07 1.05/1.08 .191 0.69 0.65/0.72
19TW
1.07 1.05/1.08 .127 0.81 0.80/0.85
19XTW
1.07 1.05/1.08 .089 0.89 0.86/0.91
20RW
0.91 0.90/0.91 .152 0.61 0.58/0.62
20TW
0.91 0.90/0.91 .127 0.66 0.65/0.69
20XTW
0.91 0.90/0.91 .100 0.71 0.69/0.72
21RW
0.81 0.81/0.83 .152 0.51 0.50/0.53
21TW
.0.81 0.81/0.83 .0114 0.58 0.57/0.61
21XTW
0.81 0.81/0.83 0.89 0.64 0.62/0.66
22RW
0.71 0.71/0.72 .152 0.41 0.39/0.43
22TW
0.71 0.71/0.72 .102 0.51 0.48/0.52
22XTW
0.71 0.71/0.72 .075 0.56 0.55/0.58
23RW
0.64 0.64/0.65 .152 0.33 0.32/0.36
23TW
0.64 0.64/0.65 .102 0.43 0.42/0.46
23XTW
0.64 0.64/0.65 .075 0.48 0.47/0.51
24RW
0.56 0.56/0.57 .127 0.31 0.29/0.33
24TW
0.56 0.56/0.57 .102 0.37 0.34/0.39
24XTW
0.56 0.51/0.52 .075 0.36 0.34/0.43
25RW
0.51 0.51/0.52 .127 0.25 0.24/0.28
25TW
0.51 0.51/0.52 .102 0.31 0.29/0.33
25XTW
0.51 0.51/0.52 .075 0.36 0.34/0.38
26RW
0.46 0.46/0.47 .102 0.25 0.24/0.28
26TW
0.46 0.46/0.47 .076 0.31 0.29/0.34
26XTW
0.46 0.46/0.47 .050 0.36 0.33/0.37
27RW
0.41 0.41/0.42 .102 0.20 0.19/0.23
27TW
0.41 0.41/0.42 .076 0.25 0.24/0.28
27XTW
0.41 0.41/0.42 .050 0.31 0.29/0.33