Upchurch Two-Piece

IDEX Fingertight Two-Piece Fittings

IDEX Fingertight Two-Piece fittings feature a separate nut and ferrule design that delivers dependable, leak-free connections while reducing replacement costs. Because the ferrule is independent, users can replace only the ferrule instead of the entire fitting—making this style more economical than one-piece alternatives for routine maintenance and high-use systems.

These fittings are designed for tool-free fingertight operation, making installation fast and repeatable during method development, routine service, and system reconfiguration. The two-piece design also allows precise control of compression, helping maintain consistent sealing performance over repeated uses.

Head Style Options

  • Standard knurled head – Traditional fingertight design for everyday LC connections
  • Winged head – Built-in wings provide extra leverage for easier tightening by hand
  • Hex head – Allows wrench tightening when additional torque or tight access is required

Available in multiple materials, thread configurations, and tubing sizes, IDEX Fingertight Two-Piece fittings support a wide range of chromatography and fluid transfer applications. Their modular construction makes them ideal for labs that value flexibility, serviceability, and long-term cost savings.

Chrom Tech is an authorized distributor of IDEX fluidic components and stocks a broad selection of Fingertight Two-Piece fittings and replacement ferrules to keep your systems running reliably.

SKU DESCRIPTION MATERIAL PRESSURE RATING
MAX (PSI)		 TUBING OD PORT HEAD STYLE
F-113 FingerTight MicroFerrule PEEK 6,000 1/32" 10-32 Coned  
F-142 Fingertight Ferrule PEEK 6,000 1/16" 10-32 Coned  
F-142N Fingertight Ferrule, Natural ETFE 6,000 1/16" 10-32 Coned  
F-142NX Fingertight Ferrule, Natural (10/pk) ETFE 4,000 1/16" 10-32 Coned  
F-142X Fingertight Ferrule (10/pk) PEEK 6,000 1/16" 10-32 Coned  
F-162 Fingertight Ferrule PEEK 5,000 1/16" 1/4-28 Coned  
F-300 Double Winged Fingertight Fitting PEEK 5,000 1/16" 10-32 Coned Double Wing
F-300X Double Winged Fingertight Fitting (10/pk) PEEK 6,000 1/16" 10-32 Coned Double Wing
F-330 Fingertight Fitting, Long PEEK 6,000 1/16" 10-32 Coned Standard Knurl
F-330X Fingertight Fitting, Long (10/pk) PEEK 6,000 1/16" 10-32 Coned Standard Knurl
F-331 Fingertight Fitting, Short PEEK 6,000 1/16" 10-32 Coned Standard Knurl
M-215 Conductive Ferrule     360 µm 10-32 Coned  
Key Definitions â–¸
Fingertight Fitting
A fitting designed to be installed and tightened by hand without tools, providing fast, repeatable connections while reducing the risk of overtightening or port damage.
Two-Piece Fitting
A fitting design consisting of a separate nut and ferrule, allowing the ferrule to be replaced independently for lower maintenance cost and extended fitting life.
Ferrule
A compression component that seals the tubing against the port, forming a leak-free connection in two-piece fittings.
Knurled Head
A textured fitting head that improves grip for manual tightening, commonly used for standard fingertight applications.
Winged Head
A fitting head with molded wings that provide extra leverage for hand tightening without the need for tools.
Hex Head
A fitting head with a hex profile that allows wrench tightening when additional torque or accessibility is required.
Flat-Bottom Port
A port with a flat sealing surface that requires a compatible ferrule to form a secure, leak-free connection.
Frequently Asked Questions â–¸
What is the advantage of a two-piece fingertight fitting?
Two-piece fingertight fittings use a separate ferrule, so you can replace only the ferrule instead of the entire fitting. This reduces consumable cost, supports repeated reconnects, and helps maintain consistent sealing performance during routine maintenance.
When should I choose a knurled head versus a winged head?
A standard knurled head is ideal for traditional fingertight connections and everyday LC setups. A winged head provides extra hand-leverage, which is helpful when ports are hard to reach or when you want a slightly tighter connection without using tools.
Do two-piece fingertight fittings require tools to install?
Most configurations are designed for tool-free tightening by hand. If you select a hex head version, a wrench can be used when additional torque is needed or when accessibility makes hand-tightening difficult.
Why does my fitting leak even though it feels tight?
Leaks are typically caused by a mismatched port style (flat-bottom vs coned), an incorrect ferrule for the tubing OD, or a ferrule that has been reused past its sealing life. Confirm the thread/port type, use the correct ferrule, and replace worn ferrules to restore a reliable seal.
Can I reuse ferrules on two-piece fingertight fittings?
Ferrules can sometimes be reused for short-term setups, but for best sealing and repeatability—especially at higher pressures—replace ferrules when reconnecting critical lines, changing tubing, or if you see any signs of deformation, cracking, or persistent leaks.
How do I know which material is right for my application?
Material selection depends on solvent compatibility, pressure, and temperature. PEEK is a common choice for many LC solvent systems due to broad chemical resistance and ease of use. For more aggressive chemistries or specialized requirements, choose an alternative material recommended for your solvent system and operating conditions.