How to Choose automotive wire harness tape supplier?

Author: Heather

May. 26, 2025

What Makes a Great Vehicle Wire Harness Tape? - Blog

Your choice of wire harness tape is essential to modern automotive assembly. The vehicle wire harness connects everything from dash-mounted displays and speaker systems to turn signals and power steering. With the growing prevalence of screens, charging ports, cameras, and computer-powered elements in the vehicle, secure wiring has become an even greater priority.

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Damage to the electrical system can be catastrophic, leading to critical system failures, fires, and more. Tapes that bundle the wires must resist extreme heat or cold, exposure to chemicals, and potentially even abrasions from rocks or road debris (such as in the engine bay). A great vehicle wire harness tape will do all of these while remaining reliably adhered to any space, whether cramped or open to the elements.  Here are a few traits to look for:

A Tight Wrap

PVC has been the most common wire harness tape in the industry for a long time (and still is among Japanese automakers). As a flexible plastic, PVC enables tight, form-fitting wrap-around wire bundles that must navigate increasingly tight spaces in today’s device-laden but (lightweighted) vehicles. 

Abrasion Resistance

Wire harness tapes are rated A through F on how well they resist abrasions (with A representing virtually no resistance, and F extremely high). According to international standard ISO , the scrape abrasion test involves rubbing an abrading tool back and forth across the tape under specified pressure and conditions.  Class A tapes survive fewer than a hundred strokes, whereas Class F will withstand over 15,000 before failure.

Cloth polyester tape has risen to greater prominence over the last decade for it’s impressive resistance to heat and abrasions. It’s also highly flexible and easy to tear by hand for manual application (still the standard for wire harness tape). When polyester is nonwoven (fleece or PET felt), it’s also effective for sound attenuation.

The toughness of modern textiles has pulled manufacturers slowly away from the old standby of PVC tapes.

Insulation From Heat and Electricity

This is another area where PVC shines, as it’s a powerful electrical insulator. However, the engine compartment’s high temperatures may encourage automakers to consider options such as polyester, foils, fleeces, and vinyl. Glass cloth tapes are notable for incredibly high heat resistance compared to other textile wire harness tapes.

The tape backing isn’t the only consideration for heat resistance or insulation, though—the adhesive layer must survive temperature fluctuations without peeling and help insulate the wire bundles to which it is adhered.

Resistance to Chemicals and Contaminants

Woven tapes can function well where oils and contaminants are expected, especially if laminated or treated, but smooth polymers and foils will provide the most secure seal. Many modern polymers like polyester and PVC will withstand corrosive substances to protect your vehicle wire harness from damage. 

If a cloth tape is necessary or preferred, the backing can be coated to make it flame-retardant, waterproof, or chemical-repellant (as required).

Your choice of vehicle wire harness tape will likely vary throughout the vehicle, and it should. The backing or adhesive layers you select will depend on the location and what threats you anticipate the wires may face in that area. Consult with a supplier of automotive films and tapes for a more nuanced understanding of your options as you search for the ideal wire harness tape.

Choosing the Right Wire Harness Covers and Wraps

The Perfect Wire Harness Covers And Wraps

A cable harness is a collection of electrical wires or cables grouped to transmit electrical power or signals. They may be called as wire harnesses, wiring assembly, cable assembly, or wiring looms. Understanding the differences between wire harnesses, covers, and wraps is critical to choosing the appropriate one for your application.

Violin Technologies provides industrial hoses and cable assemblies for various industries, such as defense, heavy equipment, and medicine. They use advanced equipment and a skilled workforce to deliver high-quality products to their customers. Their wire harness and cable bundle products protect from external elements, high temperatures, and electrical power or signals transmitting. They are the best contract manufacturers in the business.

This article will discuss the best wire harness covers and wraps and guide you in selecting the most suitable option.

1. Material

A wire harness cover or a corrugated flexible conduit is the most critical factor to consider when catering to your requirement. It must be robust enough to withstand abrasion, puncture, or use damage.

Nylon is a flexible and sturdy material that offers excellent thermal protection, puncture, and abrasion. It is also resistant to chemicals and ultraviolet rays, making it an ideal choice for outdoor applications.

Polyester is a durable material that can withstand high temperatures and resist chemicals and ultraviolet rays.

Polyethylene is a lightweight, flexible material with excellent moisture, chemical, and wear resistance. At the same time, polypropylene is durable, flexible, has a high melting point, and resists chemicals, abrasion, and moisture.

2. Size

The wiring harness cover or cable wrap size should fit comfortably without being too loose or tight, as a loose cover may not protect the wires adequately. In contrast, a tight cover may damage the wires or affect the wiring system’s performance.

3. Temperature range

When choosing a wire harness cover or a cable wrap, ensure that it withstands the wide temperature range of the environment where it will be used. If the cover or wrap cannot withstand the high temperature, it may degrade, crack or melt, leading to a failure of the wiring system. It must also endure low temperatures depending on the specific application and requirements.

4. Chemical resistance

High chemical resistance is another critical parameter when choosing a wire harness cover or wrap. The cover or wrap should withstand chemical exposure without degrading or becoming brittle. Chemicals such as oils, solvents, and acids can cause the cover or wrap to degrade, leading to a failure of the wiring system.

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5. Abrasion resistance

Another vital aspect to consider when choosing a wiring harness cover or wrap is abrasion resistance. The cover or wrap should withstand abrasion from external elements such as dirt, rocks, and other debris that may come into contact with the wiring system. If the cover or wrap is not abrasion-resistant, it may wear out quickly, leading to a failure of the wiring harness.

6. UV resistance

While choosing automotive wiring harnesses or cable wraps, you must ensure that they withstand exposure to UV rays without degrading them or making them brittle. If the cover or wrap is not UV resistant, it may crack or become brittle, leading to a failure of the wiring system.

7. Flexibility

Flexibility is another crucial factor when choosing a wire harness cover or wrap. The cover or wrap should be highly flexible enough to fit the wiring harness comfortably without being too loose or too tight. If the cover or wrap is not flexible enough, it may damage the wires or affect the overall performance of the wiring system. Choosing the best wire harness manufacturers can guide you in selecting the best wraps and covers.

Various Categories Of Wire Harness Covers

Pre-fab braids

Pre-fab braids made from materials like nylon, polyester monofilament, or polyethylene are popular wire and cable covering choices in the automotive industry due to their lightweight design, flexibility, durability, and ability to resist heat. The most commonly used materials in wire harness covers and wraps are nylon, polyester, polyethylene, and polypropylene.

Looms

You can find looms in split or corrugated tubing designs, typically made of polypropylene, polyamide, or polyethylene. Tees are used to cover splits, and looms are suitable for Motor peripherals due to their slit design.

Braid weaving looms

Braid weaving looms are created by braiding woven polyester monofilament using a loom to form a strong, heat-resistant covering. They provide excellent harness protection in heavy equipment but are inflexible and cannot be fixed on-site. Violin Technologies are pioneers in the wire harness manufacturers list.

Tape

Tape installation is a suitable solution for covering areas between sleeves and other cable harness covers, despite being time-consuming. It encapsulates wire bundles, provides excellent protection, and is easy access to install due to its small size. Different hot melt adhesive or self-vulcanizing tape options are available to meet different application requirements.

Split Weave Looms

Split weave looms are commonly used in automotive applications and have a split on the side that makes wire and cable wrapping simple. They are typically made of polyethylene, polyamide, or polypropylene and do not compress wires.

Sleeving

Sleeving is a cable or wire covering commonly made of braided self-closed wrap fiberglass or polyester. Fiberglass sleeving is high voltage resistance and offers good electrical performance, making it an excellent choice for applications that require these properties. Conversely, polyester sleeving is recognized for its effortless installation and dismantling, remarkable durability against wear, and unrestricted flexibility in every direction. Although fiberglass braided sleeve can be more challenging, it is typically sealed using heat to secure the ends.

Heat-shrink tubing

Heat-shrink tubing covers cables and wires with plastic tubes that can be shrunk using a heat gun or blow torch resulting in a tight, protective covering around the wires. The most commonly used material for heat-shrink tubing is polyolefin, which is known for its durability, flexibility, resistance to chemicals, prevent electromagnetic interference, and very high temperatures UV resistance.

In addition to colored tubing, clear tubing is also available. It is a good choice for providing electrical insulation and physical properties protection while adding an attractive appearance to wire assemblies. Heat-shrink tubing is widely used in automotive, electrical signals, cable TV, and wireless telecom industries.

Bottomline

It is important to take certain measures to maximize the lifespan of your cables and wires. It is crucial to use wire and cable harness covers. The electrical systems can function properly by keeping the cables and wires secure.

Regardless of your industry or application, Violin Technologies is one of the best wire harness manufacturers in India, providing comprehensive solutions for all your wiring harness-covering needs. Our extensive wire and cable wraps and covers offer optimal protection for your wiring assemblies and cable harnesses. Contact us to ensure the best for your businesses.

Contact us to discuss your requirements of anti slip tape supplier. Our experienced sales team can help you identify the options that best suit your needs.

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