Leading Convolute Tube Manufacturers

Convolute tubes are constructed using single sheets of cardboard and a variety of adhesives, depending on an application’s needs. Wire harnesses are bundled and protected using convoluted tubing. This non-heat shrinkable, flame-retardant tube has excellent crush and abrasion resistance. It is appropriate for confined, small areas with high mechanical pressure in demanding settings. In addition, this tube may securely transmit corrosive materials because it is chemically and non-flammable inert. Read More…

Convolute Tubes The word convolute means “to roll longitudinally upon itself” or “to form into a twisted, coiled, or rolled shape.” So, convolute tubes are simply those cardboard tubes that have been rolled in on themselves.

As a member of the Member of the Independent Converters Association, we know the business of cardboard tubes. Our tubes are some of the strongest in the industry and we can meet a huge variety of needs from many different industries.

Ace Paper Tube Corporation $$$

Valk Industries provides engineering and manufacturing services for cardboard tubes as well as custom thermoformed items like clamshells, blister packs, trays and filler material.

Valk Industries, Inc. $$$

Western Container partners with the world`s top spiral tube equipment designers & paperboard manufacturers, to bring our customers the very best paper tubing and precision cores.

Western Container Corp. $$$

Chicago Mailing Tube is a premier manufacturer of custom paper tubes, containers, and cores, providing products that are both high quality and economical. CMT has been meeting custom size and design requirements for its customers since 1902.

Chicago Mailing Tube $$$

Here at Paper Tubes and Sales we are a proven manufacturer of high quality cardboard tubes. These products are ideal for a multitude of industries and our teams are available to assist you with determining the best paper tube for your application.

Paper Tubes & Sales $$$
Get Your Company Listed
placeholder image Ace Paper Tube Corporation Valk Industries, Inc. Western Container Corp. Chicago Mailing Tube Paper Tubes & Sales

Convoluted tubes have more beam strength than their spiral counterparts, thanks to their structure. Since smaller interior diameters are simpler to obtain and can sustain internal pressure more reliably thanks to their single-sheet production technique, convolute tubes are perfect for use as pyrotechnic cardboard tubes. Additionally, convolute tubes’ single-sheet production method makes it simple to add a flap to the outside of their convolutes, which is advantageous in applications such as textiles.

convolute tube

Applications of Convolute Tubes

  • Convolute tubes are used to identify wire bundles using different colors.
  • Convolute tubes provide protection from liquids.
  • Convolute tubes are used in applications where vibration is a significant factor.
  • Convolute tubes provide additional safeguards for wire harnesses.
  • Convolute tubes are used in robotics applications.
convolute tube application

This kind of tubing works well in a variety of settings and applications. Because of its coiled and twisted structure, which offers flexibility and heat resistance, it has unique protections. Its spiral convolutions, which have varying diameters, give it its circumferential strength. This modification allows the tubing to be coiled in small spaces and tucked between acute angles without endangering the wires. The automobile, telecommunications, electronic, maritime, and other industries use it frequently. The following materials are frequently used to make convolute tubes:

  • Polyethylene
  • Nylon (PE)
  • Polypropylene (PP)
  • Polyester (PT)

A convolute cardboard tube has a higher beam strength (the level of protection from being cut), but a lower crush strength (the level of protection from being crushed), when compared to a spiral cardboard tube of the same dimensions. Convolute tubes and cores can be produced more simply than spiral tubes, thanks to a combination of the paper grain direction and winding orientation. Internal diameter (ID) and wall thickness range are extremely specific, and mandrel or manufacturing tool length determines the maximum tube width.

How Convolute Tubes are Made

  • Convolute tubes were originally produced by using a smooth bore tube and pulling a wire down on this tubing to create convolutions. The wire was wrapped around the tubings and then fastened to the end of the tubing to maintain the convolutions. However, creating the convolutions was time-consuming, difficult, and inefficient for large-scale production. Eventually, newer equipment was designed to automate this procedure.
  • Convoluted tubing employs twice as much material as a typical smooth bore tube, resulting in a tube that is internally reinforced to withstand higher pressures and resist collapse while providing more flexibility. It is, therefore, better able to turn and be wound between pieces of machinery.
  • The fact that PTFE, or polytetrafluoroethylene...a synthetic fluoropolymer (an organic polymer containing fluorine), creates a very flexible convolute tube, and has a memory is among its distinctive qualities. It can still recall the original sizing requirements for which it was extruded. When a cuff is placed on the end of this tube, this becomes a defining characteristic between PTFE and FEP (the copolymer known as fluorinated ethylene propylene) convoluted tubing. PTFE can remember its initial dimensions, so when heated and the cuff is produced, it naturally returns to those dimensions. This trait enables an operator to size a die's cuff and produce a surface so smooth that it is impossible to detect that the die was ever convoluted.
  • FEP convolute tubes are formed through extrusion, where they are shaped by being forced through a die. The die operator may occasionally need to exert more pressure on the tube when adding a cuff to remove the convolutions. It is possible to create a reasonably smooth cuff, but one will always be able to make out the lines inside the tube that indicate the beginning and end of each convolution.
tube winding machine

Types of Convolute Tubes

Helical Convolute Tubes: Helical convolute tubes resemble a screw threading with one continuous convolution spiraling along their length. These tubes are used with electrical wiring systems that need flexibility, high-temperature performance, and exceptional resistance to a range of fluids. They are used in both the military and private aerospace sectors.

Annular Convex Tubes: Annular convex tubes feature a series or parallel convolutions along their length. Convoluted tubing is incredibly light and provides excellent resistance to mechanical damage through strong crush strength and abrasion resistance.

Choosing the Correct Convolute Tubes Supplier

To make sure you have the most positive outcome when purchasing Convolute Tubes from a Convolute Tubes Company, it is important to compare at least 4 Manufacturers using our list of Convolute Tubes companies. Each Convolute Tubes Supplier has a business profile page that highlights their areas of experience and capabilities and a contact form to directly communicate with the manufacturer for more information or request a quote. Review each Convolute Tubes business website using our patented website previewer to get an idea of what each company specializes in, and then use our simple RFQ form to contact multiple Convolute Tubes businesses with the same quote.

Convolute Tube Informational Video


Cardboard Tubes Power Pages

Mailing Tubes

Mailing Tubes

A mailing tube is a sturdy, solid, and durable cardboard container designed for shipping long slender devices and products or rolled up maps, banners, and posters. The indestructible exterior of mailing tubes...

Paper Tubes

Paper Tubes

Paper tubes consist of paper or paperboard sheet layers wound together to form strong, hollow, and usually cylindrical shapes. The paper layers are laminated or bonded together using adhesives. The wall thickness of the tube can vary depending on the number of layers wrapped during manufacturing...

Poster Tubes

Poster Tubes

A poster tube is a cylindrical, triangular, or rectangular hollow prism that is commonly used to transport rollable, unframed art, important documents, or long and slender materials. They also carry objects like...

Shipping Tubes

Shipping Tubes

A shipping tube is a long container used for mailing long items that are rolled or folded to fit in the tube. They are constructed of various types of materials with Kraft paper being the most common and widely used. For extra...



A Sonotube® is a cardboard concrete forming tube made of waxed paper or lamination that is wound into a tube into which concrete is poured to create supports, columns, and supports for posts. Sonotube® is a registered trademark...

Tape and Label Cores

Tape and Label Core

A tape and label core is a thick durable tube that forms the center of a label or tape roll with the same shape as that of a toilet paper or paper towel core but is sturdier and more resilient. Although the shape of tape and label...

Custom Plastic Bag

Custom Plastic Bag

A customized plastic bag, poly bag, or pouch is a container made of thin, flexible plastic film, nonwoven fabric, or plastic textile tailored to meet a product's particular requirements. Chemicals, food, powders, ice, periodicals, and other...

Plastic Bags

Plastic Bags

A plastic bag is an unwoven single piece poly fabricated receptacle for storing, carrying, packaging of a wide variety of items and materials. Though they are very thin and easy to carry, plastic bags are strong, waterproof, and hold their shape under normal use...

Plastic Baggies

Plastic Baggies

A plastic baggie is a type of sack, container, or pouch made of an unwoven material that is exceptionally flexible and pliable made of a polymer. They are used to store food, electronics, pharmaceuticals, shipping, and retail displays for products...

Packaging Equipment & Supplies
Featured Industries