FEP Capillary Tubing
Custom micro-bore FEP capillary tubes support transparent fluid observation, flexible routing, chemical resistance, and stable small-volume transfer in compact assemblies.
Specification Snapshot
FEP capillary tubing is selected when a design needs clear visual inspection, flexible routing, broad chemical resistance, and low-volume transfer in a compact package.
Product Formats
Each format can be quoted with target ID / OD, wall thickness, tolerance, package form, and application media.
Small-bore FEP tubing for low-volume transfer, compact fittings, and tight instrument routing.
Continuous capillary tubing for analytical instruments, lab systems, and production routing.
Prepared FEP sleeves for small components, wire protection, fixture assembly, and repeatable production handling.
FEP capillary paths for sample transfer where chemical resistance and visible routing both matter.
Applications
Use the application notes to define media, temperature, bend radius, connection method, and sample quantity.
Clear capillary tubing supports visible routing and stable low-volume transfer inside compact instruments.
Discuss Your Project
Flexible FEP capillary lines help prototype compact test paths without hiding the flow route.
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Capillary sleeves protect fine wires, probes, and small assemblies while keeping the layout inspectable.
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FEP supports chemically resistant small-flow transfer where users need visual confirmation.
Discuss Your ProjectMaterial Comparison
FEP balances clear visibility, flexibility, and broad chemical resistance for compact low-volume paths.
| Material | Transparency | Flexibility | Chemical fit | Best use |
|---|---|---|---|---|
| FEP | Clear | High | Broad chemical resistance | Visible capillary flow paths, sample lines, compact routing |
| PTFE | Translucent | Medium | Excellent chemical and temperature resistance | High-temperature capillary tubing where clarity is less important |
| PFA | Clear to translucent | Medium | High purity and strong chemical resistance | High-purity fluid paths and higher temperature programs |
| ETFE | Translucent | Medium | Good chemical resistance with strong toughness | Mechanically demanding protective capillary sleeves |
Precision Manufacturing & QC
FEP capillary projects need tooling, process control, dimension checks, and careful packaging to preserve the approved flow path.
Tooling, melt control, and puller settings are aligned to stabilize ID, OD, and wall thickness.
ID, OD, wall thickness, appearance, and handling condition are checked during production.
Coils and cut lengths are packed with batch references and project-specific handling notes.
RFQ Checklist
A complete RFQ helps engineering confirm whether the request needs tooling, a trial run, or a direct production quote.
FAQ
Use these answers to prepare the first sample request and avoid incomplete RFQ data.
The feasible ID range depends on OD, wall thickness, tolerance, tooling, resin grade, and handling requirements. Share a drawing or target envelope for confirmation.
Yes. The same project can include continuous coils for routing and cut-to-length sleeves for assembly stations.
FEP is often selected when transparency and flexible routing matter, while PTFE is often selected for higher temperature or very low-friction requirements.
FEP capillary tubing is a practical option for visible low-volume paths in analytical instruments when the media and temperature are compatible.
Samples and pilot runs help confirm fit, bend behavior, connection method, and chemical compatibility before bulk production.
Send material, ID / OD, wall thickness, length, application, chemical media, working temperature, working pressure, quantity, certification requirements, and drawings.
RFQ Support
Share your material, dimension, application, and documentation requirements. Our team can review the micro-bore target, packaging, and sample path before quoting production.
Include the fields below so engineering can confirm the FEP capillary tubing route.
