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MINSTAC Tubing & Components

MINSTAC, The Lee Company's Miniature Inert System of Tubing and Components, offers the ability to precisely control flow rate, pressure, filtration and other performance factors of aggressive fluids.

Lee MINSTAC Tubing End Connections

The basis of the Lee MINSTAC System is the unique Collet-Lock system, which allows the chamfering of PTFE tubing, and threading a specially designed Collet onto its end.  This assembly provides a leak-proof connection from PTFE tubing to the wide range of MINSTAC components and fittings, all without the problems associated with the cold flow characteristics of PTFE.

Standard tubing assemblies are available from stock with one or two fitting ends installed. Special lengths and fitting assembly tool kits are also available. Please request T.R. 062 for complete assembly instructions and tool kit part numbers.

LHD Plug-In Style - Line Drawing
Unless otherwise specified, dimensions are in inches [mm]
(Click on drawing to enlarge)

The standard tubing connection sizes described below are available with a variety of inner diameters, and are capable of satisfying most fluid handling requirements.

062 MINSTAC

The 062 MINSTAC fitting system is for use with 0.062" (1.57 mm) O.D. PTFE tubing and uses a 0.138-40 UNF fitting end. The system utilizes an internally threaded collet that grips the outer diameter of the PTFE tubing end, preventing cold flow. The coupling screw acts like a compression fitting and presses the chamfered end of the tubing against one end of the PCTFE ferrule, as the other end of the ferrule is pressed against the sealing surface in the boss. This self-aligning fitting provides a reliable leak proof system.

LHD Plug-In Style - Line Drawing
Unless otherwise specified, dimensions are in inches [mm]
(Click on drawing to enlarge)

125 MINSTAC

The 125 MINSTAC fitting system is for use with 0.125" (3.18 mm) O.D. PTFE tubing and uses a 0.25-28 UNF fitting end. The system utilizes an internally threaded collet that grips the outer diameter of the PTFE tubing end, preventing cold flow. The coupling screw acts like a compression fitting and presses the chamfered end of the tubing against one end of the PCTFE ferrule, as the other end of the ferrule is pressed against the sealing surface in the boss.  This self-aligning fitting provides a reliable leak proof system.

LHD Plug-In Style - Line Drawing
Unless otherwise specified, dimensions are in inches [mm]
(Click on drawing to enlarge)

156 MINSTAC

The 156 MINSTAC fitting system is for use with 0.156" (3.96 mm) O.D. tubing and uses a 0.25-28 UNF fitting end. The system utilizes an internally threaded collet that grips the outer diameter of the PTFE tubing end, preventing cold flow. The coupling screw acts like a compression fitting and presses the chamfered end of the tubing against one end of the PCTFE ferrule, as the other end of the ferrule is pressed against the sealing surface in the boss.  This self-aligning fitting provides a reliable leak proof system.

156 MINSTAC
Unless otherwise specified, dimensions are in inches [mm]
(Click on drawing to enlarge)