ETFE

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Ethylene tetrafluoroethylene, or ETFE, is a copolymer of ethylene and tetrafluoroethylene (TFE). This copolymer combines the fully fluorinated TFE with non-fluorinated ethylene to produce a material with considerably increased strength compared to PTFE, PFA, or FEP. ETFE possesses superior impact strength and abrasion resistance when compared to PTFE, but with somewhat less flexibility. ETFE also has improved cut-through and stress cracking resistance. ETFE maintains its mechanical properties at a continuous working temperature of up to 300 ºF (148 ºC).

ETFE can be extruded in various forms, including flexible convoluted tubing. In heat shrinkable form, this copolymer has a lower recovery temperature than most polymer heat shrinks and possesses excellent dielectric strength. This insulating feature and lower heat shrink temperature make ETFE highly suited as a splicing aid for wire harness applications and as a simple jacketing material.

ETFE is nearly chemically inert; thus, it is suited to chemical fluid handling and analytical applications. ETFE is radiation resistant, allowing it to stand up to gamma sterilization protocols; this, together with ETFE tubing’s flexibility, has allowed it to be used in medical device applications. With its superior toughness, durability, and chemical resistance, ETFE has found its way into a broad spectrum of applications.

We produce ETFE in extruded tubing, multi-lumen tubing, Sub-Lite-Wall™ tubing, heat shrink, and special profiles. We can also combine ETFE with fillers to modify this product for specific applications. For example, ETFE with glass filler greatly increases the material’s ability to tolerate physical stresses and wear. This filler also lowers the weight per volume of the finished product.

ETFE can be sourced with flares, flanges, draw downs, drilled holes, or a combination of more than one value-add service, and it can be made in long continuous lengths. This material is also available in custom extruded shapes, sizes, colors, profiles, and multi-lumen forms.

Contact our team or call toll-free in US 1-800-526-3842 or International at +1-803-268-9500 to learn more about this and other Zeus products.

  • APPLICATIONS

    Critical Fluid Transfer – ETFE’s unique copolymer structure protects against chemical invasion, physical abrasion, and radiation. ETFE maintains its mechanical properties at a continuous working temperature of up to 300 ºF (148 ºC) and can withstand exposure to a wide range of acids, bases, and hydrocarbons.

    Dry Lubrication – ETFE is a very lubricious plastic with a low coefficient of friction, nearly matching that of PTFE. This smooth surface facilitates the feeding of wires and other components through extended tubing channels for applications that require abrasion protection. ETFE also provides a durable jacketing material that easily slides over fiber optics without causing damage.

    Electrical – Because of ETFE’s exceptional dielectric properties, ETFE heat shrink is a good option for electrical insulation while conferring superior chemical resistance when shrunk over wires. ETFE heat shrink is an excellent splicing aid for designed applications or repairs made in the field.

    Furcation Tubing – Also called jacketing, this ETFE application is commonly used in fiber optics to protect these fragile communication devices. ETFE’s lubricious surface enables it to easily slide over fiber optics without damaging these delicate fibers.

    Wire Splicing – ETFE heat shrink provides exceptional electrical insulation and chemical resistance; these attributes serve it well as a splicing aid when needing to join wires without soldering or welding.

    General Industrial – ETFE is a lubricious fluoropolymer, and its collective properties make it a good option for many industrial applications.

    Medical – ETFE is sterilizable via several protocols, including gamma irradiation, ETO, and autoclaving. ETFE tubing’s high degree of chemical inertness makes it very amenable to use in a medical setting.

    Wire Harness – With a dielectric strength extending up to 1800 volts/mil, ETFE is an effective option for wire harness insulation in addition to its abrasion protection. ETFE convoluted tubing serves as a flexible conduit to protect wires, cables, and fiber optics from physical damage due to its mechanical toughness while also providing added insulation. Expandable ETFE spiral wrap, or spiral cut tubing, provides similar abrasion protection.

  • PRODUCTS

    Convoluted Tubing – This tubing contains multiple convolutes in series, resulting in a highly flexible and maneuverable tubing material. Also called flexible conduit, convoluted tubing is used as a protective covering for wires and fiber optics in critical areas of aerospace, automotive, and general industrial applications.

    Custom Profiles – We excel in producing tight-tolerance custom profiles and special shapes for our extruded products. Our ETFE tubing modifications include special profiles, splines, and many other unique shapes. Engineered surfaces can be applied to the inner, outer, or both diameters of the tubing.

    Extruded Tubing – ETFE extruded tubing offers superior strength compared to FEP, PFA, and PTFE, and also possesses very high chemical resistance. ETFE tubing provides somewhat greater stiffness but also possesses excellent impact protection. This tubing can be used to protect its contents from chemical contaminants and mechanical stresses while also providing insulating properties for electrical applications.

    Fiber – The smooth surface finish, chemical resistance, and mechanical properties of ETFE make it very amenable as a monofilament. ETFE fiber exhibits exceptional toughness, radiation resistance, and no chemical reactivity toward nearly all common solvents and corrosive solutions.

    Fillers – ETFE tubing is available with a number of fillers to allow you to tailor your product more precisely to your application. Barium or bismuth, for instance, can provide visibility to the tubing under fluoroscopic procedures. Glass added to the ETFE resin gives increased abrasion resistance while lowering its weight per volume. Carbon can be added to aid static dissipation, and pigments add color. Additional fillers are available by request.

    Heat Shrink – ETFE heat shrink has broad applications ranging from covering and protecting critical components in harsh working environments to wire splicing. ETFE’s temperature tolerance and chemical resistance make this heat shrink a primary option for component and wire encapsulation.

    Lay-Flat™ Tubing – Zeus Lay-Flat™ tubing is tubing that is pressed flat and delivered spooled onto rolls or cut to length. Lay-Flat™ tubing provides a seamless, flexible, and flattened tubing with all of the beneficial traits of conventional ETFE tubing. Lay-Flat™ tubing is an excellent solution for protection and build-up prevention typically required for laser printer rolls, copiers; and fax and paper machines.

    Multi-Lumen – Our multi-lumen tubing contains numerous lumens, or “passages,” forming multiple working channels that run the length of the tubing. These channels allow multiple instruments, guide wires (medical), or fluids to be passed through the tube. Multi-lumen tubing is widely used in medical devices such as catheters, electronic devices, and fluid handling applications.

    Sub-Lite-Wall™ Heat Shrink – This super-thin-walled heat shrink has been developed specially to minimize thickness where thickness is of critical importance. ETFE Sub-Lite-Wall™ heat shrink is sterilizable for biomedical applications to encapsulate probes, meters, and other tools.

  • KEY PROPERTIES

    Abrasion and Impact Resistance – ETFE’s hardness directly affects how it tolerates abrasion and impact; with this greater toughness comes ETFE’s greater ability to tolerate physical trauma.

    Biocompatible – ETFE has a proven history of use within medical devices. For more information on ETFE’s biocompatibility, contact us today.

    Chemical Resistance – ETFE is unreactive towards almost all commonly encountered solvents, including acids, bases, or hydrocarbons, which would typically affect other plastics.

    Flame Resistance – ETFE tubing is safe to use at temperatures up to 300 °F (148 °C), is flame resistant, and is UL 94 V-0 compliant.

    Greater Crush Resistance – ETFE’s properties not only contribute to its higher pressure rating but also mean that ETFE tubing is much more resistant to crushing.

    Higher Tensile Strength – Compared to other fluoropolymers, ETFE exhibits very high tensile strength, enabling it to withstand high levels of mechanical stress.

    Higher Pressure Rating – ETFE’s exceptional mechanical properties give ETFE tubing a higher pressure rating than many other fluoropolymers.

    Mechanical Toughness – ETFE has superior hardness and strength compared to other common fluoropolymers such as PTFE, PFA, or FEP. ETFE’s toughness allows it to withstand high levels of mechanical stress, including burst, cracking, and crushing in a wide range of environments.

    Melt Weldable and Thermoformable – In heat shrink form, ETFE is fully weldable when heat is applied and is also thermoformable.

    Moderate Continuous Working Temperature – While ETFE has many superior working qualities, its properties are best maintained when used at temperatures not exceeding 300 °F (148 °C).

    Resistance to Stress Cracking – With its superior tensile strength and mechanical toughness, ETFE tubing is highly resistant to stress cracking.

    Sterilizable – Our ETFE tubing tolerates several sterilization methods, including gamma irradiation, ETO, and e-beam procedures. Likewise, its high temperature tolerance means that it is also autoclavable.

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