Flangeless Fittings

IDEX Flangeless Fitting Categories

Chrom Tech offers a complete selection of IDEX Flangeless fittings.

Key Definitions â–¸
Flangeless Fittings
Flat-bottom fittings designed to connect tubing without creating a permanent flange, allowing quick installation and easy reconfiguration in LC systems.
Super Flangeless Fittings
A high-pressure flangeless fitting system that resists loosening caused by tubing twist and vibration, ideal for demanding LC applications.
Flat-Bottom Port
A port style with a flat sealing surface that requires a ferrule-based fitting rather than a flared or coned connection.
Ferrule
A small compression component that grips the tubing and creates a leak-free seal when tightened inside a port.
Lock Ring
A component used in Super Flangeless systems that prevents ferrule rotation and maintains consistent sealing pressure.
Tubing OD
The outside diameter of tubing, which must match the fitting and ferrule size for proper sealing.
Frequently Asked Questions â–¸
What is the difference between Flangeless and Super Flangeless fittings?
Standard Flangeless fittings provide reliable flat-bottom connections, while Super Flangeless fittings add a locking ring system to prevent loosening caused by tubing twist and vibration.
Do I need tools to install Flangeless fittings?
Most Flangeless fittings are designed for fingertight installation, but hex-head versions are available when additional torque is required.
Which applications benefit most from Super Flangeless fittings?
Super Flangeless fittings are ideal for high-pressure LC systems, tubing assemblies, and applications subject to vibration or frequent reconnections.
Can Flangeless fittings be reused?
Nuts can typically be reused, but ferrules may need replacement if deformation or wear is observed.
How do I choose the correct Flangeless fitting?
Selection depends on tubing OD, port thread, pressure requirements, and chemical compatibility. Chrom Tech specialists can assist with proper selection.