FEP often offers better visibility of fluid. Compare the actual appearance, dimensions, fluid and connections; material names alone do not establish tolerance or pressure capability.
FEP Clear FEP Tubing for Reagent Lines, 0.3–2.0 mm ID, 1.6–3.2 mm OD
FEP (fluorinated ethylene propylene) tubing, also known as F46 tubing, offers good chemical resistance. Clear tubing allows liquids and bubbles to be observed and is commonly used in reagent, sample and wash-fluid lines where visual inspection of the fluid is needed. Compared with PTFE, FEP generally offers greater optical clarity. Compare gas permeability for the target gas under matched conditions, including wall thickness and temperature.
Inner diameters range from 0.3–2.0 mm and outer diameters from 1.6–3.2 mm, with ID/OD combinations matched to the listed sizes. Tubing is available by the roll or as flanged, retaining-ring or ferrule tubing assemblies. Ferrule connections do not require pre-flanging. Connection configurations for tubing ODs of 1.6, 2.0, 2.5, 3.0 and 3.2 mm can be matched to the selected size, with tubing length and fittings at ends A and B customized to drawings.
FOREACH holds ISO 9001 and ISO 13485 quality management system certifications and supports sample testing. The availability of compliance documentation, including RoHS reports, is confirmed for the selected model and project requirements. When clear FEP tubing is used for bubble detection, verify detection performance with the selected sensor model, tubing dimensions and actual fluid. 200 °C is a reference temperature limit for the material; the actual operating range depends on the temperature and pressure limits of both the tubing and fittings.
Typical Applications:
Reagent and sample lines requiring visual observation of liquids or bubbles, Small-bore sample introduction connections, Wash-fluid lines
FEP tubing selection
Select inner diameter, outer diameter and supply specifications, then save the configuration for your inquiry.
Material properties
| Density (g/cm³) | 2.13 |
|---|---|
| Tensile Strength (MPa) | 27.6 |
| Flexural Strength (MPa) | 18.5 (ASTM D790) |
| Dielectric Strength (kV/mm) | 2.1 (IEC60243-1) |
| Water Absorption (%) | <0.01 (ASTM D570) |
| Hardness (Shore D) | 50, 60 |
| Operating Temperature (℃) | -230~200 |
| Coefficient of Thermal Expansion (cm/cm/°C) | 9.9X10⁻⁵ |
| Melting Temperature (°C) | 260 |
| Low-Temperature Brittleness (°C) | -250 |
Frequently Asked Questions
Need to confirm your FEP tubing specification and conditions?
Share the fluid, concentration, ID/OD, length, temperature, pressure or vacuum, fittings and routing requirements. FOREACH can help review your FEP tubing and connection configuration.