One-Piece Fingertight fittings
Popular, convenient and easy to use
The original IDEX one-piece fingertight fitting design is still highly popular. These fittings are convenient and easy to use while they also prevent ferrules from sticking in the receiving port.
Manufactured in PEEK polymer for 1/16” OD tubing connecting to 10-31 coned ports at a pressure rating of 5,000 psi (345 bar). These fittings are available in a variety of colours, materials, and lengths, to suit virtually every application.
The P-100 variant for 1/8” OD tubing fitted to 1/4-28 coned ports is made in PCTFE and has a pressure tolerance of 1,000 psi (69). The M-645 version for 1/32” OD tubing into 6-40 ports, which can be a direct replacement for the corresponding VICI Valco fitting, is constructed from both PEEK and PCTFE and can withstand 1,750-3,250 psi (121-224 bar).
The RheFlex One-Piece Fingertight Fittings with ChromTRAC knobs 6000-282 are included in many of the manual IDEX valves. All these fittings generally require a torque 3–4 in-lbs (0.34–0.45 N·m). These fitting are also available with multicoloured knobs in blue, green, gray, red, and yellow.

- The original One-Piece Fingertight fitting
- All polymer construction
- Versions available for 1/16”, 1/32”, or 1/8” OD tubing
- Convenient and easy to use
- Reusable
Product details

| Part No.* | Description | Port | Pressure Rating | Head Style | Material |
|---|---|---|---|---|---|
| 6000-282 | RheFlex Fitting for 1/16” OD Tubing | 10-32 Coned | 5,000 psi (345 bar) | ChromTRAC knob** | PEEK Natural, w. knobs in black |
| 6000-282MC | RheFlex Fitting for 1/16” OD Tubing, with mulicoloured knobs | 10-32 Coned | 5,000 psi (345 bar) | ChromTRAC knob** | PEEK Natural, w. knobs in blue, green, grey, red, yellow |
| F-120 | Fingertight Fitting for 1/16” OD Tubing, Natural | 10-32 Coned | 5,000 psi (345 bar) | Standard Knurl | PEEK Natural |
| F-120B | Fingertight Fitting for 1/16” OD Tubing, Blue | 10-32 Coned | 5,000 psi (345 bar) | Standard Knurl | PEEK Blue |
| F-120BLK | Fingertight Fitting for 1/16” OD Tubing, Black | 10-32 Coned | 5,000 psi (345 bar) | Standard Knurl | PEEK Black |
| F-120G | Fingertight Fitting for 1/16” OD Tubing, Green | 10-32 Coned | 5,000 psi (345 bar) | Standard Knurl | PEEK Green |
| F-120R | Fingertight Fitting for 1/16” OD Tubing, Red | 10-32 Coned | 5,000 psi (345 bar) | Standard Knurl | PEEK Red |
| F-120Y | Fingertight Fitting for 1/16” OD Tubing, Yellow | 10-32 Coned | 5,000 psi (345 bar) | Standard Knurl | PEEK Yellow |
| F-130 | Fingertight Fitting for 1/16” OD Tubing, Long | 10-32 Coned | 5,000 psi (345 bar) | Standard Knurl | PEEK Natural |
| M-645 | Fingertight Fitting for 1/32” OD Tubing | 6-40 Coned | 1,750–3,250 psi (121–224 bar) | Headless Knurl | PEEK Natural/PCTFE Natural |
| P-100 | Fingertight Fitting for 1/8” OD Tubing | 1/4-28 Coned | 1,000 psi (69 bar) | Diamond Knurl | PCTFE Natural |
| **ChromTRAC knobs are also available in additional colours for larger quantities | |||||
Resources
Consult the Periodic Table of Analytical Fittings for a quick overview, the Fittings 101 for guidance and learning, and the IDEX Catalogue for product details, or contact Biotech Fluidics for expert advice.




