Masterflex L/S Tubing Options

Achieve top performance from your Masterflex L/S pump heads when you use precision-extruded tubing. Tubing is manufactured to tight tolerances that match our L/S pump heads. Choose from precision tubing or high-performance precision tubing. High-performance precision tubing has a thicker wall that improves pressure generation, suction lift, ability to pump viscous fluids, and tubing life. Choose from over a dozen different formulations.

Precision Tubing Specifications

Tubing size L/S 13 L/S 14 L/S 16 L/S 25 L/S 17 L/S 18
Inside diameter* in. (mm) 0.03 (0.8) 0.06 (1.6) 0.12 (3.1) 0.19 (4.8) 0.25 (6.4) 0.31 (7.9)
Hose barb size* in. (mm) 1/16 (1.6) 1/16 (1.6) 1/8 (3.2) 3/16 (4.8) 1/4 (6.4) 3/8 (9.5)
Flow range with 6 to 600 rpm drive mL/min 0.36 to 36 1.3 to 130 4.8 to 480 10 to 1000 17 to 1700 23 to 2300
Maximum pressure, continuous** 25 psig (1.7 bar) 20 psig
(1.4 bar)
15 psig
(1.0 bar)
10 psig
(0.7 bar)
Maximum pressure, intermittent** 40 psig (2.7 bar) 35 psig
(2.4 bar)
20 psig
(1.4 bar)
15 psig
(1.0 bar)
Maximum vacuum** 26" Hg (660 mm Hg) 20" Hg (510 mm Hg)
Suction lift 29 ft H2O (8.8 m H2O) 22 ft H2O (6.7 m H2O)

High-Performance Precision Tubing Specifications

Tubing size L/S 15 L/S 24 L/S 35 L/S 36
Inside diameter* in. (mm) 0.19 (4.8) 0.25 (6.4) 0.31 (7.9) 0.38 (9.7)
Hose barb size* in. (mm) 3/16 (4.8) 1/4 (6.4) 3/8 (9.5) 3/8 (9.5)
Flow range with 6 to 600 rpm drive
in mL/min. Values in ( ) obtained with High-Performance pump head
10 to 1000
(11 to 1100)
17 to 1700
(18 to 1800)
23 to 2300
(26 to 2600)
29 to 2900
(34 to 3400)
Maximum pressure, continuous** 25 psig (1.7 bar) 20 psig
(1.4 bar)
15 psig
(1.0 bar)
Maximum pressure, intermittent** 40 psig (2.7 bar) 35 psig
(2.4 bar)
20 psig
(1.4 bar)
Maximum vacuum** 26" Hg (660 mm Hg) 24" Hg
(610 mm Hg)
Suction lift 29 ft H2O (8.8 m H2O) 27 ft H2O
(8.3 m H2O)

*Nominal size.
**Actual performance varies depending on tubing formulation.