PEEK HPLC Components & Engineering Plastics Selection Guide
From one-piece and two-piece chromatography fittings, tees, crosses, bulkhead adapters and reducing fittings to Luer sampling components, microfluidic connectors, PEEK plugs and valves, ferrules, capillary tubing, sample loops, PEEK fasteners and engineering-plastic materials, this guide provides a structured approach to laboratory fluidic and mechanical-component selection.
How Should PEEK HPLC Components Be Selected?
Selecting a fitting only by its appearance is not recommended. A more reliable approach is to identify tubing size, thread standard, sealing geometry and fluidic function.
An HPLC or laboratory fluidic system normally relies on several individual components working together. Even a relatively simple flow path may include PEEK capillary tubing, finger-tight fittings, ferrules, tees, adapters, plugs and valves. Therefore, two components with the same thread specification are not necessarily interchangeable when their sealing geometry, tubing diameter or mounting configuration is different.
This guide organizes the available products into seven principal groups: HPLC fittings and connectors, Luer and microfluidic components, fluid-control components, ferrules and sealing accessories, capillary tubing and sample loops, PEEK plastic fasteners, and engineering-plastic materials. This structure helps researchers identify the appropriate product family according to the actual system configuration.
Product Category Overview
The product range is organized into seven primary groups according to function and application.
PEEK HPLC Fittings & Connectors
Tees and crosses, two-piece fittings, micro-tube fittings, one-piece fittings, bulkhead fittings and reducing adapters.
PEEK Luer, Sampling & Microfluidic Fittings
Column-to-Luer adapters, microfluidic chip fittings, syringe interfaces and sampling adapters.
PEEK Plugs, Valves & Fluid-Control Components
PEEK plugs, barbed hose adapters, check valves, shut-off valves and other control components.
PEEK Ferrules & Sealing Accessories
Ferrules for multiple tubing sizes, designed for two-piece fitting compression and sealing.
Chromatography Tubing, Capillaries & Sample Loops
FEP / PTFE tubing, HPLC connection tubing, PEEK sample loops, capillaries and tube cutters.
PEEK Plastic Fasteners
Slotted, socket-head and hex-head screws, together with PEEK nuts and flat washers.
Engineering Plastics & Machined Materials
PEEK pellets, rods, sheets and machined parts, reinforced PEEK and PI materials.
Quick Selection by Application
If the exact model is not yet known, begin with the intended application to narrow down the product family.
Standard HPLC Tubing Connections
Start with one-piece fittings, two-piece fittings, PEEK capillary tubing and ferrules . Confirm 1/16" tubing and the instrument-side thread, commonly 10-32UNF.
Multi-Port Flow Splitting
Select T-type, Y-type, square or cross-type tees and multi-port fittings, then confirm the 1/16" or 1/8" tubing system.
Thread & Size Conversion
Use adapters, reducers and bulkhead fittings when different tubing sizes or thread standards need to be connected.
Syringe / AKTA Sampling
Consider male and female Luer fittings, chromatography-column adapters and sampling connection assemblies.
Microfluidic Chip Connections
Choose from 1/16" and 1/8" microfluidic chip holders, two-piece fittings and 10-32 / 1/4-28 interfaces.
Flow Shut-Off & Direction Control
PEEK plugs, barbed adapters, check valves and shut-off valves can be used for port sealing, hose transitions and flow-direction control.
Understanding Tubing, Thread & Sealing Specifications
Tubing diameter, thread standard and sealing geometry are among the most important factors when selecting PEEK chromatography fittings.
| Parameter | Typical Form | Representative Products | Selection Checkpoints |
|---|---|---|---|
| 10-32UNF | Male / Female / Cone-Bottom | CHWG Series, CHZY Series, CHDT Series | 1/16" tubing, sealing geometry and male/female orientation |
| 1/4-28UNF | Female / Male / Flat-Bottom | Luer fittings, microfluidic holders, 1/8" fittings | 1/8" tubing, sealing geometry and available installation space |
| 5/16-24UNF | Bulkhead / Locking / Adapter | CHZY-03, CHZY-04 and related fittings | Confirm both interface specifications |
| M6 | M6 Adapter | CHZY-11 and related models | Confirm both the M6 side and the opposite tubing/thread interface |
| Flat-Bottom | Flat-face sealing | Various 1/4-28UNF fittings | Thread size alone does not guarantee compatibility |
| Cone-Bottom | Conical sealing interface | Various 10-32UNF fittings | Match the sealing surface to the instrument interface |
Main Product Category Comparison
Each component family solves a different problem within the fluidic system.
| Product Category | Key Parameters | Typical Specifications | Typical Application | Selection Priority |
|---|---|---|---|---|
| One-Piece Fittings | Tubing / Thread / Finger-Tight Structure | 1/16", 1/8" | Routine tubing connections | Confirm tubing OD and instrument thread |
| Two-Piece Fittings | Fitting Body + Ferrule | 1/16", 2 mm, 3.2 mm, etc. | Detachable tubing connections | Ferrule must match tubing OD |
| Luer Fittings | Luer Male/Female + Chromatography Thread | 10-32UNF, 1/4-28UNF | Syringe and chromatography sampling | Confirm Luer orientation and chromatography-side thread |
| Microfluidic Fittings | Holder / Fitting / Chip Port | 1/16", 1/8" | Glass or planar microfluidic chips | Confirm both fitting and chip geometry |
| PEEK Plugs | Male/Female Thread / Sealing Surface | 10-32, 1/4-28 | Closing unused ports | Thread and sealing geometry must match |
| Capillary Tubing | OD / ID / Length / Material | PEEK, FEP, PTFE | Fluid transport | Confirm both ID and OD |
| PEEK Sample Loops | Volume / OD / Fitting | µL to mL | HPLC / AKTA sample metering | Confirm volume and interface |
| PEEK Fasteners | Thread Diameter / Length / Head Type | M2–M20, etc. | Non-metallic structural fastening | Mechanical dimensions and mounting structure |
PEEK Fittings & Fluidic Connector Series
The fitting range can be further divided into six principal structural types.
Tees & Cross Fittings
T-type, Y-type, round, square and cross configurations for splitting or combining flow paths.
Two-Piece Fittings
Separate fitting body and ferrule, allowing ferrule selection according to tubing OD.
Micro-Tube Fittings
Small-format fluidic fittings covering 6-32UNC, 10-32UNF and related thread standards.
One-Piece Fittings
Integrated tube-locking structure for convenient installation and routine experiments.
Bulkhead & Locking Fittings
Designed for through-panel installation and internal-to-external instrument fluidic connections.
Adapters & Reducers
Used to connect different tubing sizes, thread standards or interface systems.
CHST01
T-Type Tee · 1/8" · Flat-Bottom
CHST02
T-Type Tee · 1/16" · Cone-Bottom
CHFT1601
Two-Piece Fitting + CHRH01 Ferrule
CHDT-03
1/16" · 10-32UNF · Cone-Bottom Plug
Capillary Tubing, Connection Tubes & Sample Loops
Tubing should be selected according to material, outer diameter, inner diameter and length. Inner diameter is particularly important because it affects internal flow-path volume.
| Product | Specification | Material / Interface | Reference Price | Main Application |
|---|---|---|---|---|
| Transparent FEP Tubing | ID 0.8 mm × OD 1.6 mm | FEP | $2.94 | Transparent laboratory fluidic tubing |
| Milky-White PTFE Tubing | ID 0.5 mm × OD 1.6 mm | PTFE | $2.94 | Flexible fluid transfer |
| CHZY-10 Connection Tube | PEEK ID 0.10 mm | 10-32UNF | $12.60 | HPLC connection-tube assembly |
| PEEK Capillary Tubing | OD 1.6 mm × ID 0.10 mm × 1 m | PEEK | $9.30 | Small-ID chromatography flow path |
| CHDLH05 | 5 µL | 1/16" (1.6 mm) | $30.60 | Injection / metering |
| CHDLH100 | 100 µL | 1/16" (1.6 mm) | $40.05 | AKTA / HPLC sample loop |
| CHDLH1.0 | 1.0 mL | 1/16" (1.6 mm) | $100.11 | Large-volume sample metering |
PEEK Plastic Fasteners
In addition to fluidic components, the product range includes multiple PEEK screws, nuts and washers for non-metallic structural assembly.
| Series | Representative Size | Structure | Reference Price | Application |
|---|---|---|---|---|
| Slotted Hex-Head Screw | M4 × 3 | Slotted + Hex Head | $2.00 | General structural fastening |
| Socket-Head Screw | M2 × 3 | Hex Socket | $1.80 | Small-component assembly |
| PEEK Nut | M2 | Hex Nut | $2.40 | Used with matching PEEK screws |
| PEEK Nut | M12 | Hex Nut | $4.00 | Larger structural components |
| PEEK Flat Washer | M2 / M3 / M4 / M5 / M6, etc. | Flat Washer | From $2.00 | Insulation / spacing / structural assembly |
PEEK & PI Engineering Plastics
Beyond standard fluidic components, engineering materials are also available as pellets, rods and machined stock for material selection and component development.
| Material / Model | Material System | Product Form | Reference Price | Suggested Application |
|---|---|---|---|---|
| PEEK8550G | Pure Resin | Plastic Pellets | $6.40 | Injection molding / material research |
| PEEK8550CA | Carbon-Fiber Reinforced | Plastic Pellets | $6.40 | Reinforced engineering plastics |
| PEEK8550GL | Glass-Fiber Reinforced | Plastic Pellets | $6.40 | Reinforced structural components |
| PEEK8550FC | Wear-Resistant Grade | Plastic Pellets | $6.40 | Friction / wear-resistant structures |
| Pure PEEK Rod | Pure PEEK | Solid Rod | $23.60 | CNC machining / structural parts |
| PI Polyimide | PI | Rod / Sheet, etc. | $4.40 | Engineering-plastic machining |
Representative Model Search
Select a product category or search keywords such as “10-32”, “1/16”, “CHST”, “Luer” or “M2”.
| Category | Model / Specification | Key Parameters | Reference Price | Inquiry |
|---|---|---|---|---|
| Tee | CHST01 | 1/8" · T-Type · Flat-Bottom | $12.60 | Request Quote |
| Tee | CHST02 | 1/16" · T-Type · Cone-Bottom | $12.60 | Request Quote |
| Tee | CHST03 | 1/16" · Special Tee · Cone-Bottom | $31.20 | Request Quote |
| Two-Piece | CHFT1601 + CHRH01 | Two-Piece Fitting + Ferrule | $5.70 | Request Quote |
| Luer | 1/16" Female Luer | 10-32UNF | $11.70 | Request Quote |
| Luer | 1/8" Female Luer | 1/4-28UNF | $11.70 | Request Quote |
| Microfluidics | 1/8" Biochip Set | 1/4-28UNF | $17.16 | Request Quote |
| Luer | 1/4-28UNF Male Luer | Pressure Rating 20 MPa | $14.70 | Request Quote |
| Plug | CHDT-03 | 1/16" · 10-32UNF · Cone-Bottom | $3.51 | Request Quote |
| Plug | CHDT-10 | 1/4-28UNF · Flat-Bottom | $10.14 | Request Quote |
| Barbed Adapter | CHDG-01 | 10-32UNF · Tapered | $9.00 | Request Quote |
| Check Valve | CHF-214BE | Two-Port Check Valve | $104.70 | Request Quote |
| Ferrule | CHRH-16 | For 1/16" OD Tubing · 10 pcs | $19.20 | Request Quote |
| Ferrule | CHRH-20 | For 2 mm OD Tubing · 10 pcs | $19.20 | Request Quote |
| FEP Tubing | ID 0.8 × OD 1.6 mm | Transparent FEP | $2.94 | Request Quote |
| Connection Tube | CHZY-10 | 10-32UNF · ID 0.10 mm | $12.60 | Request Quote |
| Sample Loop | CHDLH05 | 5 µL · 1/16" | $30.60 | Request Quote |
| Capillary Tubing | OD 1.6 / ID 0.10 mm | PEEK · 1 m | $9.30 | Request Quote |
| Socket-Head Screw | M2 × 3 | PEEK | $1.80 | Request Quote |
| Slotted Screw | M4 × 3 | PEEK · Hex Head | $2.00 | Request Quote |
| PEEK Nut | M2 | Hex Nut | $2.40 | Request Quote |
| PEEK Pellets | PEEK8550G | Pure Resin | $6.40 | Request Quote |
| PEEK Pellets | PEEK8550CA | Carbon-Fiber Reinforced | $6.40 | Request Quote |
| PEEK Pellets | PEEK8550GL | Glass-Fiber Reinforced | $6.40 | Request Quote |
| Rod | Pure PEEK | Natural · Size on Request | $23.60 | Request Quote |
| PI Material | PI Polyimide | Brown · Size on Request | $4.40 | Request Quote |
Recommended Selection Sequence
Following this sequence helps reduce interface mismatches during system assembly.
Confirm Instrument Interface
Identify 10-32UNF, 1/4-28UNF, M6 or another required thread standard.
Confirm Tubing Dimensions
Record tubing OD, ID, required length and material such as PEEK, FEP or PTFE.
Confirm Sealing Geometry
Determine whether the connection uses a flat-bottom, cone-bottom or two-piece ferrule structure.
Complete the Accessory Set
Check whether ferrules, plugs, valves, tees, tube cutters or adapters are also required.
Frequently Asked Questions
Click a question to expand the answer.
Not necessarily. In addition to the 1/16" tubing size, the instrument-side thread, male/female orientation and flat-bottom or cone-bottom sealing geometry should also be confirmed. Although 1/16" tubing is commonly paired with 10-32UNF, the actual instrument interface should always be verified.
They should not be treated as interchangeable interfaces. When the two sides use different standards, a suitable adapter is required. The sealing geometry and tubing size should also be confirmed.
A two-piece connection normally uses a separate fitting body and ferrule to compress and secure the tubing. The ferrule must therefore match the actual outer diameter of the tubing.
Luer adapters, chromatography-column adapters and PEEK sample loops are good starting points. The final fitting should then be selected according to the instrument-side interface, such as 10-32UNF or 1/4-28UNF.
Some capillary products use different colors to help distinguish tubing with different inner diameters, including red, yellow, blue, orange and green options. The specified OD and ID should still be used as the primary selection parameters.
Provide a clear photo of the instrument interface, thread dimensions, tubing dimensions and the intended connection. A suitable adapter or customized component can then be evaluated.
Purchase & Technical Support
PEEK chromatography fittings and tubing are available in many dimensions and interface configurations. If the correct model cannot be identified from the product name alone, provide the instrument interface, tubing size, thread specification, flat-bottom or cone-bottom geometry, application and required quantity for faster model matching.
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Recommended Inquiry Information
Tubing OD / ID / Thread / Sealing Geometry
Instrument Model / Quantity / Application
