Tubing Sleeves

IDEX Tubing Sleeves

Chrom Tech offers a complete selection of IDEX (Upchurch Scientific®) tubing sleeves designed to create reliable, low-dead-volume connections when working with capillary and small-OD tubing. These sleeves are engineered to adapt delicate tubing to standard receiving ports, ensuring proper alignment, concentricity, and leak-free sealing in high-performance LC and microfluidic applications.

Tubing sleeves are essential when the receiving port is not designed to directly accept capillary tubing. By creating a precision interface between the tubing and fitting, sleeves help prevent damage to tubing, improve connection stability, and eliminate dead volume that can cause peak broadening or carryover.

Why Use Tubing Sleeves?

  • Ensure proper sealing when connecting capillary tubing to standard ports
  • Maintain tubing concentricity for consistent flow paths
  • Minimize dead volume and reduce dispersion
  • Adapt fixed-length fittings to variable tubing pocket depths
  • Protect fragile capillary tubing from damage during tightening

IDEX tubing sleeves are available for a wide range of inner diameters and tubing OD sizes and are color-coded for fast visual identification. Select from options compatible with PEEK, FEP, and fused silica tubing to match your system requirements.

For optimal performance, select a sleeve with an inner diameter approximately 0.001"–0.002" (25–50 µm) larger than the outer diameter of your capillary tubing. This ensures proper compression without collapsing the tubing ID.

Chrom Tech is an authorized distributor of IDEX fluidic components and stocks a wide selection of tubing sleeves for fast shipment. If you need help selecting the correct sleeve for your tubing size, pressure requirements, or application, our team is ready to assist.

PART NO ID FOR TUBING OD SIZE MAX TEMP MAX PRESSURE COLOR
PEEK TUBING SLEEVES FOR 1/16" OD FITTINGS
F-225 0.005" (125 µm) 70 – 110 µm 125 °C 6,000 PSI Red
F-226 0.007" (180 µm) 125 – 165 µm 125 °C 6,000 PSI Yellow
F-227 0.009" (230 µm) 175 – 215 µm 125 °C 6,000 PSI Yellow
F-228 0.011" (280 µm) 225 – 265 µm 125 °C 6,000 PSI Blue
F-229 0.013" (330 µm) 275 – 315 µm 125 °C 6,000 PSI Natural
F-230 0.016" (405 µm) 350 – 390 µm 125 °C 6,000 PSI Orange
F-231 0.022" (560 µm) 505 – 545 µm 125 °C 6,000 PSI Natural
F-234 0.027" (685 µm) 630 – 670 µm 125 °C 6,000 PSI Yellow
F-232 0.031" (785 µm) 730 – 770 µm 125 °C 6,000 PSI Natural
F-233 0.034" (865 µm) 785 – 825 µm 125 °C 6,000 PSI Blue
PEEK TUBING SLEEVES FOR 1/32" OD FITTINGS
F-381 0.007" (180 µm) 125 – 165 µm 125 °C 5,000 PSI Yellow
F-382 0.008" (205 µm) 150 – 190 µm 125 °C 5,000 PSI Natural
F-384 0.010" (255 µm) 200 – 240 µm 125 °C 5,000 PSI Blue
F-387 0.011" (280 µm) 225 – 265 µm 125 °C 5,000 PSI Red
F-388 0.013" (330 µm) 275 – 315 µm 125 °C 5,000 PSI Black
F-385 0.015" (380 µm) 325 – 365 µm 125 °C 5,000 PSI Natural
F-386 0.020" (510 µm) 455 – 495 µm 125 °C 5,000 PSI Orange
FEP TUBING SLEEVES FOR 1/32" OD FITTINGS
F-374 0.011" (280 µm) 225 – 265 µm 50 °C 1,750 PSI Blue
F-375 0.013" (330 µm) 275 – 315 µm 50 °C 1,750 PSI Orange
F-376 0.0155" (395 µm) 340 – 380 µm 50 °C 1,750 PSI Green

Key Definitions â–¸
Tubing Sleeve
A precision insert used to adapt small-diameter or capillary tubing to standard receiving ports, ensuring proper alignment, compression, and leak-free sealing.
Capillary Tubing
Small-inner-diameter tubing commonly used in microfluidic, UHPLC, and low-flow applications requiring precise volume control and minimal dispersion.
Dead Volume
Unwanted internal space within a fluidic connection that can cause peak broadening, sample dispersion, and carryover.
Concentricity
Proper centering of tubing within a fitting or port to ensure uniform flow and prevent uneven compression or leakage.
Sleeve Inner Diameter (ID)
The internal measurement of a tubing sleeve. For best performance, the sleeve ID should be approximately 0.001"–0.002" (25–50 µm) larger than the tubing OD.
Color-Coded Sleeves
A visual identification system used by IDEX to quickly distinguish sleeve sizes, helping users select the correct component for their tubing OD.
Frequently Asked Questions â–¸
What are tubing sleeves used for?
Tubing sleeves adapt small-diameter or capillary tubing to standard receiving ports, allowing proper compression and leak-free sealing in HPLC and microfluidic systems.
How do I choose the correct sleeve size?
Select a sleeve with an inner diameter approximately 0.001"–0.002" (25–50 µm) larger than your tubing outer diameter to ensure proper sealing.
Can tubing sleeves be reused?
Sleeves are not permanently attached and may be reused if undamaged, but replacing worn sleeves is recommended to maintain leak-free performance.
Do I need tools to install tubing sleeves?
Most sleeve systems require a wrench-tightened nut to achieve proper compression and sealing, especially for high-pressure applications.
Why are color-coded sleeves helpful?
Color coding allows quick visual identification of sleeve size, helping prevent installation errors and ensuring proper tubing fit.
Are tubing sleeves compatible with all fittings?
Sleeves are designed for specific fitting systems such as MicroTight and NanoPort. Always verify compatibility with your fitting and port type.