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Maximum Operating Pressures of ISMATEC Standard Tubing
Temperature at 73°F / 22.7°C
ID WT* Tygon Standard Tygon LFL Tygon HC Tygon MH Tygon MHSL
mm / inch mm / inch bar / psi bar / psi bar / psi bar / psi bar / psi
0.8 / 1/32 0.8 / 1/32 5.3 / 76 5.3 / 76 6.7 / 97 3.3 / 48 -
1.6 / 1/16 3.4 / 49 3.4 / 49 4.2 / 61 2.1 / 30 -
2.4 / 3/32 2.2 / 31 2.2 / 31 2.8 / 40 1.4 / 20 -
3.2 / 1/8 2.2 / 31 2.2 / 31 2.7 / 39 1.4 / 20 -
0.8 / 1/32 1.6 / 1/16 8.7 / 126 8.7 / 126 10.9 / 158 5.5 / 79 5.5 / 79
1.6 / 1/16 4.8 / 70 4.8 / 70 6.1 / 88 3.4 / 50 3.1 / 45
2.4 / 3/32 3.8 / 55 3.8 / 55 4.8 / 69 2.4 / 34 2.4 / 34
3.2 / 1/8 3.0 / 44 3.0 / 44 3.8 / 55 2.0 / 30 2.0 / 30
4.8 / 3/16 2.2 / 31 2.2 / 31 2.7 / 40 1.4 / 20 1.5 / 22

6.4 / 1/4

1.8 / 25 1.8 / 25 2.2 / 32 1.2 / 18 1.1 / 17
8.0 / 5/16 1.5 / 21 1.5 / 21 1.8 / 27 1.0 / 15 0.9 / 14
9.5 / 3/8 1.3 / 18 1.3 / 18 1.6 / 23 0.9 / 13 0.8 / 12
11.1 / 7/16 1.2 / 17 1.2 / 17 1.5 / 21 0.7 / 10 0.7 / 10
4.8 / 3/16 2.4 / 3/32 3.0 / 44 3.0 / 44 3.8 / 55 - -
6.4 / 1/4 2.4 / 35 2.4 / 35 3.0 / 43 - -
8.0 / 5/16 2.0 / 28 2.0 / 28 2.5 / 36 - -
9.5 / 3/8 1.8 / 26 1.8 / 26 2.2 / 32 - -
11.1 / 7/16 1.5 / 21 1.5 / 21 1.8 / 26 - -
6.4 / 1/4 3.2 / 1/8 3.0 / 44 3.0 / 44 3.8 / 55 1.9 / 27 1.9 / 27
8.0 / 5/16 2.5 / 37 2.5 / 37 3.2 / 46 1.6 / 23 1.6 / 23
9.5 / 3/8 2.2 / 31 2.2 / 31 2.7 / 40 1.4 / 20 1.4 / 20
11.1 / 7/16 1.9 / 27 1.9 / 27 2.4 / 34 1.2 / 17 1.2 / 17
12.7 / 1/2 1.8 / 25 1.8 / 25 2.2 / 32 1.2 / 18 1.1 / 16
15.9 / 5/8 1.5 / 21 1.5 / 21 1.8 / 26 1.0 / 15 0.9 / 13
* Wall thickness The information provided in this table has been provided by the tubing manufacturer
Temperature at 73°F / 22.7°C
ID WT* Tygon Si Pharmed
(Ismaprene)		 Norprene Fluran HCA  
mm / inch mm / inch bar / psi bar / psi bar / psi bar / psi  
0.8 / 1/32 0.8 / 1/32 1.1 / 16 2.3 / 33 2.3 / 33 2.3 / 33 -
1.6 / 1/16 0.7 / 10 1.4 / 20 1.4 / 20 1.4 / 20 -
2.4 / 3/32 0.5 / 7 1.0 / 14 1.0 / 14 1.0 / 14 -
3.2 / 1/8 0.5 / 7 0.9 / 13 0.9 / 13 0.9 / 13 -
0.8 / 1/32 1.6 / 1/16 1.9 / 27 3.7 / 54 3.7 / 54 3.7 / 54  
1.6 / 1/16 1.0 / 15 2.1 / 30 2.1 / 30 2.1 / 30  
2.4 / 3/32 0.8 / 12 1.6 / 23 1.6 / 23 1.6 / 23  
3.2 / 1/8 0.6 / 9 1.3 / 19 1.3 / 19 1.3 / 19  
4.8 / 3/16 0.5 / 7 0.9 / 13 0.9 / 13 0.9 / 13  

6.4 / 1/4

0.4 / 5 0.8 / 11 0.8 / 11 0.8 / 11  
8.0 / 5/16 0.3 / 5 0.6 / 9 0.6 / 9 0.6 / 9  
9.5 / 3/8 0.3 / 4 0.5 / 8 0.5 / 8 0.5 / 8  
11.1 / 7/16 0.3 / 4 0.5 / 7 0.5 / 7 0.5 / 7  
4.8 / 3/16 2.4 / 3/32 0.6 / 9 1.3 / 19 1.3 / 19 1.3 / 19  
6.4 / 1/4 0.5 / 7 1.0 / 15 1.0 / 15 1.0 / 15  
8.0 / 5/16 0.4 / 6 0.8 / 12 0.8 / 12 0.8 / 12  
9.5 / 3/8 0.4 / 5 0.8 / 11 0.8 / 11 0.8 / 11  
11.1 / 7/16 0.3 / 5 0.6 / 9 0.6 / 9 0.6 / 9  
6.4 / 1/4 3.2 / 1/8 0.6 / 9 1.3 / 19 1.3 / 19 1.3 / 19  
8.0 / 5/16 0.5 / 8 1.1 / 16 1.1 / 16 1.1 / 16  
9.5 / 3/8 0.5 / 7 0.9 / 13 0.9 / 13 0.9 / 13  
11.1 / 7/16 0.4 / 6 0.8 / 12 0.8 / 12 0.8 / 12  
12.7 / 1/2 0.4 / 5 0.8 / 11 0.8 / 11 0.8 / 11  
15.9 / 5/8 0.3 / 5 0.6 / 9 0.6 / 9 0.6 / 9  
* Wall thickness
The information provided in this table has been provided by the tubing manufacturer
Temperature at 73°F / 22.7°C
ISMATEC SA, Labortechnik - Analytik, Feldeggstrasse 6, 8152 Glattbrugg, Switzerland
www.ismatec.com, sales.ismatec@idexcorp.com, Inquiry form, Phone and fax numbers