All You Should Know about Bonding FEP Tubing

October 20, 2019 by  
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FEP (fluorinated ethylene propylene) tubing is one of the most versatile materials companies around the world use for numerous projects. FEP tubes have unique physical properties that make the product an excellent choice for projects with special parameters. This includes projects where materials will be exposed to extreme temperatures, tension, or chemicals. Here are some interesting facts about FEP tubing you’ll want to keep in mind for future projects.


FEP tubing is thought of as the original fluoropolymer. The material was first developed as a melt processable fluoropolymer alternative to PTFE. Due to this origin, FEP tubing shares similar chemical and dielectric properties with PTFE tubing. Still, the material has a few unique properties. For example, FEP tubing is excellent for projects with special parameters, such as when a material will be exposed to extreme temperatures, tension, or chemicals, and is excellent at transmitting UV rays.

FEP tubing is also nonflammable, has nonstick properties, and is resistant to UV radiation. Furthermore, FEP tubing has a somewhat higher amount of friction, a lower continuous service temperature, is clearer, and has better gas and vapor absorbency than PTFE tubing. These unique properties makes FEP tubing one of the most advanced and affordable types of tubing on the market.


FEP tubing, being extruded, is best used for projects that involve cabling and electrical insulation, particularly foamed coaxial cables. This is because the material gives off much less heat and a lower dielectric constant during insulation than other types of tubing. This helps FEP tubing handle electrical breakdowns easier. Plus, FEP tubing maintains a moderately high temperature that’s ideal for electrical projects.

Another popular use for FEP tubing is great for transporting dangerous and often explosive chemicals without splices, observing the flow of fluids. The best extruded FEP tubing is used in appliances we use daily, such as air conditioners, heaters, hair dryers, and so on. For this reason, shrink-wrapped FEP tubing manufacturers make the material in several lengths and diameters. And while clear is the most popular color of FEP tubing, you can get tubes in several different colors.


Since FEP tubing can be purchased in clear and a variety of colors, you can easily organize and identify each tube you use for a project. This works well for complex cable arrangements in data centers and elsewhere where you need to keep specific cables in the appropriate position or order. FEP tubing, when extruded, can be made into covers and sensors for many instruments and measuring devices, including thermocouples, probes, thermometers, and RTDs. These covers and sensors protect these devices from being harmed in corrosive environments.   

Because of the material’s chemical resistance, FEP tubing is ideal for transferring fluids and can easily be formed into special shapes. These special shapes can be made into products such as dip tubes, which fit ends of tubes, providing a secure way to transport corrosive fluids. Fluid transfer is an important application in automotive, aerospace, scientific, analytical, and medical industries. All FEP tubing is made by virgin resins and complies with all FDA regulations.

Tef-Cap Industries Inc. can tell you more about FEP tubing. Visit us online, or call our corporate center in West Chester, PA, at 610-692-2576.  


Choosing the Right PTFE Filler for Your Applications

October 10, 2019 by  
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PTFE, or polytetrafluoroethylene, tubing is used in various industrial applications. Sometimes, PTFE tubing manufacturers can add fillers that enhance certain properties. The type of filler you need depends on how you will apply the tubing. Here are some common fillers and the applications they can be used for.


Glass is the most common type of filler for PTFE tubing. This type of filler is typically made from the E-glass fiber type. Glass fillers are ideal for hydraulic piston rings because they provide superb wear resistance, low creep, and excellent compression strength. The high compressive strength of glass fillers protects the tubing from becoming deformed over time. Glass fibers are made from either powder or fiber. Glass fiber delivers better creep resistance, and glass powder is available at affordable prices.


Carbon fillers add multiple benefits to PTFE tubing. This includes increased compression strength, wear resistance, hardness, and thermal conductivity (which improves heat distribution), as well as reduced absorbency. Also, adding graphite improves the wear and friction properties of carbon. Because carbon is extremely inert, the chemical has only a slight impact on the filler’s chemical resistance.


Graphite is a stable crystalline form of high purity carbon. The element occurs naturally in many rocks. You would normally use graphite in pencils and as moderators in nuclear reactors. Graphite has a flaky structure and offers excellent dry lubrication, increased load bearing strength, and decreased wear to PTFE tubing fillers. Graphite is usually combined with other fillers, particularly glass and carbon.

Molybdenum Disulfide

Molybdenum Disulfide (MoS2), is a silvery black compound made from molybdenum and sulfur. MoS2 is usually combined with glass or bronze. When added to HPTE tubing fillers, MoS2 lowers friction, decreases stick-slip properties, enhances wear resistance and stiffness, and adds deformation resistance. This element is somewhat inert, and the only way you can dissolve MoS2 is with oxidizing acids.


Bronze, an alloy of copper, provides great wear resistance and thermal conductivity to FTPE tubing fillers. Fillers made with bronze are more abrasive than other compounds, but you can fix this by adding MoS2 (molybdenum disulfide) or graphite. Applications involving bearing and piston rings generally use PTFE tubing fillers with a ratio of 55% bronze to 5% MoS2.  To make this type of filler, manufacturers add bronze by weight, typically from 40-60%.


Ekonol is a type of polyester. This composite material is aromatic and is known for being thermally stable. Along with dimensional stability and high strength, ekonol fillers provide high temperature, wear, and corrosion resistance to PTFE tubing. Ekonol is used in rotary applications because the material won’t erode compatible metal surfaces. Ekonol fillers are used in applications involving packing sets, compressor ring sets, seal sets (“O” rings, spring-loaded, lip, etc.), self-lubricating bearings, and rotor or vane style process pumps.


Polyimide is another type of polymer filler that offers superb wear and abrasion resistance. This type of filler has one of the lowest friction properties. This property allows polyimide to operate amazingly in dry applications, reducing maintenance costs of applications. PTFE tubing with polyimide fillers won’t erode compatible metal surfaces, including soft ones like brass, stainless steel, aluminum, and plastic. These properties, along with high purity and low outgassing, make polyimide ideal for use in vacuum, space, and semiconductor industries.

You can find out more about choosing the right filler for PTFE tubing by visiting Tef-Cap Industries Inc.’s website.

The Beneficial Features of PTFE Tubes

September 30, 2019 by  
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Polytetrafluoroethylene tubing, or PTFE, has been around since the 1960s, and in that time, it has come to be a commonly used option in a wide variety of tubing applications. It’s excellent insulative properties make it ideal for use in applications where electricity is involved. The flexibility and durability of PTFE tubing make it a popular choice in the aerospace and automotive industries, where it’s durable and resilient under rigorous use. Its sterile and inert qualities make it a wise choice of those in the medical, pharmaceutical, and food and beverage industries.

The beneficial features of tubing produced by a high-quality PTFE tubing manufacturer are many, which is why its uses span the modern industrial, medical, and manufacturing landscape. While many understand a few key features of this tubing type, there are many lesser-known advantages to PTFE tubing that are important to note. Keep reading to learn more.

Water Resistant

Like many fluoropolymers, PTFE is a hydrophobic substance. That means instead of absorbing water, it repels it. That not only means that it’s largely impermeable, but it also won’t leach its components into materials that are contained in the tubing, since it’s not soluble when in the presence of water.

Chemical Resistant

One of the greatest strengths of PTFE tubing is that it’s insoluble not only in the presence of water, the universal solvent, but when exposed to many more caustic and corrosive liquids as well. It’s highly resistant to a variety of chemicals such as alcohols, acids, solvents, esters, and biological fluids and won’t break down in their presence. Despite its incredible ability to tolerate chemicals, there are a few compounds such as chlorine trifluoride, molten alkalis, and gaseous fluorine that can cause PTFE to degrade and break down.

Electrical Properties

PTFE is widespread in electrical applications because of its multitude of beneficial electrical properties. It has a great dielectric constant and a high electrical breakdown voltage rating. It also has a beneficial surface resistivity level. That makes it perfect for use in insulating wires and electrical components. 

Impressive Thermal Qualities

Many plastics are highly susceptible to the influence of temperatures and their beneficial properties may degrade if the temperature fluctuates. PTFE isn’t among those substances, however, as it can retain its advantageous qualities regardless of the temperature better than many other fluoropolymers. It can tolerate temperatures from -200 degrees C to 260 degrees C without any change in flexibility, stability, or electrical resistance.

Low Coefficient of Friction

Coefficient of friction is a value that describes the ease with which a material allows liquid and substances to slide past its surfaces. In other words, the more favorable the coefficient of friction of a material, the more easily fluids and substances flow over or through it. PTFE has an extremely low coefficient of friction, which means that any liquid or substance traveling over or through a PTFE surface will flow smoothly and consistently. Not only is that important in applications where a consistent rate of flow is necessary, but it can also prevent the formation of deposits over long periods that can lead to blockage or sources of contamination. Low coefficient of friction is also beneficial in electrical applications, such as in the automotive or aerospace industries where vibration leads to tubing abrasion. Such abrasion can lead to damaged wire insulation or compromised tubing, and in the automotive and aerospace fields, such factors can negatively impact user safety.

There’s a good reason that PTFE tubing is found in many facets of modern life, as its benefits are many and its usage in industry is widespread. To learn more about the beneficial features of PTFE tubing, contact Tef-Cap Industries at (610) 692-2576.

Where PTFE Tubing Is Used: What You May Not Know

July 12, 2019 by  
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What You May Not Know
PTFE stands for Polytetrafluoroethylene, a synthetic fluoropolymer that has numerous applications in several industries. Tef-Cap Industries, Inc. has been manufacturing shrinkable PTFE tubing since 1986. PTFE tubing has many benefits, including superior thermal and electrical qualities, fantastic UV resistance, and the lowest coefficient of friction of any other kind of polymer. PTFE tubing was invented over 70 years ago and is still used today for numerous applications.

Being resistant to temperatures ranging from -170-260 degrees Celsius (-275-500 degrees Fahrenheit), PTFE tubing is used in 3D printing to transfer thermoplastic filaments to a nozzle’s melt zone. Filaments flow easily through the extremely slippery and smooth surface of the tubing. In chemical processing, PTFE tubes often replace carbon and metal piping because they can transfer highly acidic and corrosive chemicals used in many labs. Tef-Cap, Inc. has become a leader in the custom creation of Teflon PTFE tubing that is chemical resistant and excellent at handling fluids, because they have been in business for over fifty years.

PTFE tubing can be used as arterial and vascular grafts during surgery, catheters and sutures, and for cosmetic or reconstructive facial surgery. Automotive industries use PTFE tubing as fuel evaporation lines, fuel rails and jumpers, and protective cases for accelerators, brakes, and clutch cables. In the electrical industry, PTFE tubing is the best kind of tubing for wiring harnesses and architectural applications. Fiber optics can stay strong and flexible while being stored in this type of tubing.

Tef-Cap, Inc. PTFE tubing in custom sizes and ratios that meet certain standards. This company also uses several secondary processes during manufacturing, including sealing, cuffing, flaring, cutting, slitting, etching, thermosetting, and stripping. This guarantees you will get the right style of PTFE tubing for your needs.

If you are interested in shopping for more from Tef-Cap, Inc., visit

A Complete Guide to Using Teflon Tubing

July 5, 2019 by  
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Resist Heat and Corrosion

When you use Teflon PTFE tubing, you use tubing that resists more than just heat. It’s known for having a rather high resistance to corrosion. Think of it as a protective shield for your cables, acting as the wall that keeps both the heat and the corrosion on the outside. You want neither of those to intrude on and potentially damage your cables, as you don’t have time to deal with heat-damaged cables or corroded ones. Find PTFE Teflon tubing manufacturers who can help you.

Extra Benefits

When it comes to PTFE tubing, Teflon tubing does more than protect your cables from corrosion and unwanted heat. It also protects the cables inside from water damage while preventing things from becoming overly sticky. This is one of the best options for environments where moisture and cables are in close quarters with one another. If corrosion wasn’t enough, this kind of tubing has high resistance to chemicals. Stop harmful chemicals dead in their tracks with the best Teflon PTFE tubing.

Split Tubing

There are multiple kinds of Teflon PTFE Tubing. For starters, split tubing has specialized walls. Because of this advantageous property, the tubing itself can be split longitudinally. Generally, this kind of tubing is used within the medical world. It can make things easier for medical practitioners since they don’t have to dislocate a primary device in some medical applications. It just helps them when something needs to be removed from a patient.

Heat Shrink Tubing

This might be the kind of tubing that you want to use to repair or keep your cables intact. Using heat shrink tubing is rather easy since all you really need to do is add heat to it. Then, it will shrink around whatever is inside the tubing itself. When it comes to using this kind of tubing for manufacturing, it’s good for manufacturing both glass and wires. In addition, it can also be used for insulation purposes.


One of the more unique kinds of tubing is filled tubing. This kind actually comes with radioactive properties. This is because it has various chemicals added to it, which causes the tubing to acquire a few extra properties. Similar to split tubing, filled tubing also has medical applications. When it’s inside the body, X-ray photographs will make it visible, allowing doctors to easily locate anything with the tubing covering it.

Cutting the Tubing

When the time comes to actually cut the Teflon tubing, you can normally rely on four different options. You might not actually need a specialized cutting device. You could just use a pair of shears or a razor blade. These two options are recommended mainly for home use. However, if you want the cut to be more precise, consider getting some tubing cutters. If you need the best cut possible, work with a company that has access to tube cutting lasers, which are proven to be highly effective.

Your Next Application

Teflon PTFE tubing might be the answer to your next application. Whether you’re working in the medical field or you have a manufacturing project, this tubing might be the best product for your upcoming project. Whether you need to use heat shrink tubing or filled tubing, you should be able to locate exactly what you need from a trusted seller. When in doubt, ask them what they might recommend.

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