Two-Piece Fingertight Fittings

For Coned Ports

Upchurch Scientific®'s original Two-Piece Fingertight Fittings were designed exclusively for 1/16" OD tubing. We offer optional ferrules for connecting 1/32", 360 µm and 190 µm OD tubing into coned ports designed for 1/16" OD tubing. These special ferrules work with any Fingertight nut under Tow-Piece Fingertight Fitting. Our M-215 Conductive Perfluoroelastomer Ferrule is designed for mass spectrometer electrospray applications.

To order, please follow these guidelines:

1/16" OD tubing - Select the desired nut, which comes complete with the appropriate ferrule. Or, order the optional F-142N Ferrule, along with the desired nut by replacing the "x" at the end of its product number with "-01". For instance, if you want an F-200 Nut, order F-200-01, not F-200x.
Please Note: "-01" denotes a single nut without the ferrule.
1/32" OD tubing - Select the F-113 Ferrule. Order the desired nut by replacing the "x" at the end of its product number with "-01". For instance, if you want an F-200 Nut, order F-200-01, not F-200x.
Please Note: "-01" denotes a single nut without the ferrule.
360 µm OD tubing - Select the F-151 Ferrule. For electrospray applications, choose the M-215 Conductive Ferrule. Order the desired nut by replacing the "x" at the end of its product number with "-01". For instance, if you want an F-200 Nut, order F-200-01, not F-200x.
Please Note: "-01" denotes a single nut without the ferrule.
190 µm OD tubing -Select the F-148 Ferrule. Order the desired nut by replacing the "x" at the end of its product number with "-01". For instance, if you want an F-200 Nut, order F-200-01, not F-200x.
Please Note: "-01" denotes a single nut without the ferrule.

Just Wing It:

Some Upchurch Scientific Fingertight Nuts feature wings in addition to a knurled head, which provide more leverage when tightening the fitting into a receiving port. Choose our single or double-winged design.

Installing High Pressure Fittings

Before connecting fittings, ensure the end of the tubing has a clean, square, burr-free cut. This is very important, as the square cut helps the tubing make full contact with the bottom of the mating port. Neglecting to properly cut the tubing could lead to dead volume, resulting in peak distortion such as fronting, tailing or broadening.

Two-Piece Fittings with Polymer Ferrules

  1. Slide the nut, followed by the ferrule, at least 3/16” from the end of the clean cut tubing.
  2. Insert the assembly into the receiving port, pushing the tubing into the port until it bottoms out.
  3. Finger tighten the nut into the port until snug.(Upchurch Scientific® recommends a tightening torque of 2-4 in-lbs for its Fingertight fittings - roughly equivalent to typical finger tightening torque. Please note that undertightening can result in fitting leakage at pressures less than to what the fitting is rated, and overtightening can cause leakage and/or fitting damage.)
  4. After several uses (especially at high pressures) the ferrule should be replaced.

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Item #

Item Name

Material

Color

Maximum Pressure

List Price

F-300X

PEEK Double-Winged Nut, Natural, with F-142 Ferrules

PEEK

Natural

N/A

$60.51
F-330X

Long PEEK Nut, Natural, with F-142 Ferrules

PEEK

Natural

N/A

$60.51
F-142X

PEEK Ferrule, Natural for 1/16" OD Tubing

PEEK

Natural

6000 psi | 414 bar

$41.69
F-113

FingerTight MicroFerrule 1/32

PEEK

Natural

3500 - 6000 psi | 241 -414 bar

$9.00
F-151

Micro FngrTt Ferr .015in ID

Kel-F

Natural

6000 psi | 414 bar

$13.78
F-148

Micro FngrTt Ferr .009in ID

Kel-F

Natural

6000 psi | 414 bar

$13.78