PTFE Retaining-Ring Tubing Assembly
FOREACH PTFE retaining-ring tubing assemblies connect natural PTFE tubing to instrument ports using matched retaining sleeves and sealing washers. They are configured for reagent and cleaning-fluid lines in in-vitro diagnostic (IVD) and automated analytical equipment. Available tubing IDs span 0.5–2.0 mm, with ODs of 1.6, 2.0, 2.5, 3.0 and 3.2 mm. Specify tube length and end layout using actual ID/OD pairs.
Connections include PEEK 6-40 UNF fittings for 1.6 mm OD tubing and HSF6 fittings with M6×1 or 1/4-28 UNF threads. Select retaining sleeves and sealing washers as a set matched to tube dimensions and ports. Define A/B ends separately; stop tubes and labels are optional. Confirm fluid compatibility using material, concentration, temperature and contact time. Samples and batch assembly are supported. Confirm working pressure and temperature for the specific dimensions, ports and complete assembly.
FOREACH holds ISO 9001 and ISO 13485 quality management system certifications.
Typical Applications:
PTFE reagent line connections, Cleaning-fluid line integration, Retaining-ring sealing connections, Instrument fluid-path assembly
Assembly Parameters
| Tubing material and appearance | Natural PTFE |
|---|---|
| Connection structure | Retaining sleeve and sealing washer |
| Matching fittings | HSF6 fittings, 6-40 UNF miniature fittings |
| Fitting material | PPS, PEEK; selected by series |
| Standard threads | M6×1, 1/4-28 UNF (HSF6 configuration) |
| Retaining-ring kit | SUS and PEEK components matched to the kit model |
| Finished length | Custom to drawing, with specified length and tolerance |
| A/B ends | Fitting material, thread and connection type can be specified separately |
| Optional configurations | Stop tubes, heat-shrink labels |
Tube Size Combinations
| Tube OD (mm) | Matching Tube ID (mm) |
|---|---|
| 1.6 | 0.5 / 0.8 / 1.0 |
| 2.0 | 1.0 / 1.2 |
| 2.5 | 1.5 / 1.7 |
| 3.0 | 2.0 |
| 3.2 | 1.6 |
These are available tubing sizes. Confirm end dimensions and mating ports against the assembly drawing.
Match fitting material, structure and thread to the corresponding model.
Miniature option: 6-40 UNF, PEEK fitting, 1.6 mm tube OD. Confirm the complete end configuration against the selected model.
Working pressure and temperature must be confirmed for the specific assembly configuration.
PTFE Retaining-Ring Tubing Applications & Customization
Equipment development, assembly to drawing, sample development and batch production are supported.
Instrument fluid-path integration
Assemblies for in-vitro diagnostic and automated analytical instruments are selected against the actual reagent, cleaning fluid and connection requirements.
PTFE tubing and custom length
Natural PTFE tubing is cut and fitted to the instrument fluid-path layout. Provide the working fluid, cleaning fluid and operating temperature for material selection.
Assembly drawings and dimensions
Provide tube ID/OD, finished length and tolerance, length measurement datum, A/B port drawings, fitting materials, threads and installation space. Show stop and label positions and dimensions on the assembly drawing.
Fluids, pressure and temperature
Specify the working fluid, concentration, cleaning fluid, contact time, pressure, temperature and inspection requirements to confirm wetted materials and the complete assembly.
Installation and mating ports
Install the sleeve and sealing washer in the specified sequence and orientation using the designated tools. Confirm tube OD, retaining-ring kit and port as a matched connection.
Quality documents and delivery
FOREACH holds ISO 9001 and ISO 13485 quality management system certifications. Applicable REACH and RoHS reports and material safety data sheets (MSDS) can be supplied for relevant connection components according to material and model. Dimensional inspection, seal testing, identification and packaging requirements for samples and batches are agreed for each project.
Submit your requirements
Prepare an assembly drawing, port drawing or BOM, together with sample quantity, batch requirements and acceptance criteria.
Use the fluid resistance calculator for preliminary estimates when comparing how tube diameter or length affects pressure drop.
Estimate fluid resistance2D Drawing Not Available Yet
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Frequently Asked Questions
At 2.0 mm OD, natural PTFE offers 1.0 or 1.2 mm ID, giving different wall thicknesses. Select by length, flow and allowable pressure drop; check the size table and end connection.
Submit your requirements
Prepare an assembly drawing, port drawing or BOM, together with sample quantity, batch requirements and acceptance criteria.