Tenacious GT7 Black Electrical Tape – 19mm x 20m
Reliable electrical tape is an essential part of any professional technician’s toolkit. The Tenacious GT7 Black Electrical Tape is a thick, flexible PVC insulation tape designed for cable insulation, harnessing, bundling, identification, abrasion protection and general electrical maintenance.
Manufactured with a 0.18mm lead-free, high-grade polymeric PVC backing, GT7 is thicker than many lightweight general-purpose electrical tapes. It combines this robust backing with a high-performance, cross-linked solvent-based rubber-resin adhesive to provide strong adhesion and excellent conformity around cables, connections and irregular surfaces.
The tape’s black finish offers a clean, discreet appearance across production equipment, black cable, racks, technical installations and general electrical work. Supplied in a practical 19mm width and 20-metre roll, GT7 is well suited to electricians, production technicians, theatres, audiovisual suppliers, film and television departments, venues, workshops and touring crews.
Designed for Electrical Insulation and Cable Protection
GT7 is manufactured as a PVC electrical insulation tape rather than a general-purpose decorative or packaging tape.
Its flexible backing allows the tape to follow cable contours and wrap around appropriately prepared connections, joints and cable assemblies. The adhesive is designed to hold the tape securely while the PVC backing provides a protective outer layer.
Suitable applications may include:
- Electrical cable insulation
- Cable harnessing and bundling
- Protecting suitable cable joins
- Covering and identifying cable terminations
- Abrasion protection
- General electrical maintenance
- Cable and circuit identification
- Temporary cable organisation
- Automotive electrical work
- Marine electrical applications
- Industrial cable management
- Workshop and equipment repairs
Electrical tape should always be selected and applied according to the voltage, equipment, cable, installation environment and applicable electrical requirements.
GT7 should not be used to conceal damaged conductors, replace required mechanical repairs or compensate for unsuitable electrical workmanship.
Thick 0.18mm Polymeric PVC Backing
One of GT7’s defining features is its 0.18mm thick polymeric PVC backing.
The additional thickness provides a more substantial tape layer than many light-duty economy tapes. This can be useful where technicians require greater physical coverage, conformity and protection around suitable electrical cables and components.
The polymeric PVC backing is designed to remain flexible and conformable, allowing the tape to wrap around:
- Cable jackets
- Cable looms
- Irregular connections
- Small components
- Curved surfaces
- Harnesses
- Terminations
- Appropriate fittings
- Equipment wiring
- Suitable protective coverings
Tenacious describes the backing as lead-free and flame retardant. The tape is also RoHS compliant according to the manufacturer’s product information.
The tape’s thickness does not eliminate the need for correct overlap, application tension, surface preparation or electrical testing.
Strong Cross-Linked Rubber-Resin Adhesive
GT7 uses a high-performance, cross-linked solvent-based rubber-resin adhesive.
This adhesive system is designed to provide a strong, durable bond while allowing the tape to conform around cables and awkward shapes. The manufacturer describes GT7 as providing strong adhesion and excellent conformity for secure electrical wrapping.
Potential benefits include:
- Secure wrapping around suitable cables
- Good contact across curved surfaces
- Reduced lifting during normal use
- Reliable cable bundling
- Strong adhesion to compatible surfaces
- Support for longer-term installations
- Practical performance during maintenance work
The adhesive is described as non-corrosive and long lasting. Tenacious also promotes resistance to corrosion, alkalis and acids as part of GT7’s suitability for demanding electrical environments.
Actual performance will depend on the surface, installation method, temperature, contamination, exposure and service conditions. Users should confirm suitability for the intended application under realistic working conditions.
Snap-Back Memory for Secure Wrapping
Tenacious describes GT7 as having a useful memory effect: the tape stretches during application and then recovers, helping tighten the completed wrap around the cable or connection.
This characteristic can support:
- Neat cable wrapping
- Firm harnessing
- Close conformity around connections
- Reduced loose edges
- Consistent overlap
- Secure bundling
- Professional-looking cable assemblies
The tape should not be overstretched. Excessive tension can place unnecessary pressure on cables, terminations and insulation, and may encourage the tape to lift or contract after application.
For a controlled wrap, apply only enough tension to allow the tape to conform smoothly. Maintain consistent overlap and finish the final section with reduced tension so the end is less likely to pull back.
Flame-Retardant and Self-Extinguishing Construction
Tenacious identifies GT7 as flame retardant and auto-extinguishing or self-extinguishing. These properties provide an additional level of performance compared with ordinary non-rated PVC tapes.
This does not mean the tape is:
- Fireproof
- Suitable as a fire barrier
- A replacement for fire-rated cable
- Approved for sealing fire penetrations
- Suitable for direct flame exposure
- A substitute for compliant electrical enclosures
- Suitable for use on excessively hot components
The complete cable, connection and installation must still comply with the relevant electrical, fire and equipment requirements.
Damaged, overheated or incorrectly installed electrical equipment should not simply be covered with tape and returned to service.
Thermal Stability to 80°C
Tenacious specifies good thermal stability to 80°C for GT7.
This terminology is important. Thermal stability to 80°C should not automatically be interpreted as approval for continuous use on every surface operating at 80°C.
Actual performance will depend on:
- Exposure duration
- Surface material
- Electrical load
- Ambient temperature
- Cable temperature
- Application tension
- Adhesive ageing
- Ventilation
- Environmental conditions
Do not apply GT7 directly to:
- Heating elements
- Hot lighting fixtures
- Exhaust components
- Uninsulated high-temperature equipment
- Surfaces exceeding the product rating
- Components where tape may obstruct ventilation
Where elevated temperatures are expected, confirm the suitability of the tape, cable and complete installation before use.
Good UV and Water Resistance
GT7 provides good resistance to UV exposure and water according to Tenacious’s product information. This can support appropriate use across outdoor, automotive, marine and industrial environments where cables may experience sunlight or occasional moisture exposure.
Potential applications may include:
- Outdoor production equipment
- Covered festival installations
- Automotive wiring
- Marine electrical work
- Temporary outdoor technical systems
- Equipment stored or transported outdoors
- Industrial maintenance
- Exposed cable identification
Water resistance does not make the completed cable connection waterproof. Moisture can still reach conductors through cable ends, incomplete wrapping, damaged insulation, connectors or surrounding equipment.
Where an installation requires a certified waterproof or submersible connection, use an appropriately designed enclosure, connector or sealing system.
Abrasion Protection for Cables and Harnesses
Tenacious identifies abrasion resistance as one of GT7’s protective characteristics.
When correctly applied, the tape may provide a supplementary protective layer around suitable cables and harnesses exposed to routine handling.
Potential uses include:
- Cable looms
- Internal equipment wiring
- Automotive harnesses
- Production equipment
- Workshop cable assemblies
- Temporary technical installations
- Industrial control wiring
- Equipment racks
Electrical tape is not a substitute for appropriate conduit, cable glands, sleeving, grommets, cable ramps or mechanical protection where these are required.
If a cable’s insulation has been significantly cut, crushed, melted or otherwise compromised, the cable should be assessed and repaired or replaced using an approved method.
Black Tape for Discreet Production Applications
Black electrical tape is widely used across live production because it blends naturally with black cable, equipment racks, stage infrastructure and technical components.
Suitable production uses may include:
- Finishing black cable assemblies
- Bundling short sections of cable
- Identifying general technical cables
- Securing suitable cable labels
- Marking equipment components
- Organising equipment racks
- Covering bright markings
- General technical repairs
- Building production cable looms
- Maintaining venue cable inventory
Black provides a discreet and professional appearance, but it should not be relied upon where a specific colour identification is required by an electrical standard, equipment manufacturer or workplace procedure.
Use approved identification and labelling practices for electrical phases, circuits, protective conductors and safety-critical wiring.
Designed for Live Events, Theatre and Touring
Electrical and technical cabling used in live entertainment is regularly handled, transported, installed and packed down.
GT7 can be a useful consumable for:
- Lighting departments
- Audio departments
- Video and broadcast crews
- Stage technicians
- Production electricians
- Venue maintenance teams
- Touring technicians
- Equipment workshops
- AV installation crews
- Festival production suppliers
Potential production tasks include:
- Bundling equipment wiring
- Protecting suitable cable sections
- Identifying cable assemblies
- Marking equipment
- Organising rack wiring
- Securing temporary labels
- Completing appropriate workshop repairs
- Maintaining technical inventory
Electrical tape should not be used as a substitute for gaffer tape when securing cables to floors. It is narrow, flexible and designed primarily for insulation and wrapping rather than pedestrian cable management.
Where cables cross floors or public areas, use an appropriate combination of approved cable covers, ramps, floor tape or overhead routing according to the risk.
Designed for Film, Television and Production Environments
Film, television and broadcast departments require reliable electrical consumables across studios, locations, equipment workshops, sound stages and outside-broadcast environments.
Tenacious GT7 Black Electrical Tape may be useful for appropriate tasks involving:
- Studio-lighting cables
- Production equipment wiring
- Battery and low-voltage cable assemblies
- Video equipment racks
- Broadcast systems
- Mobile production equipment
- Location-lighting packages
- Technical workboxes
- Equipment identification
- Workshop cable preparation
The black finish helps the tape remain visually discreet around dark equipment, studio floors and camera-facing technical infrastructure.
Any electrical repair or modification must be completed by a person with the appropriate skills and authorisation. Tape should not be used to disguise damaged or unsafe equipment.
Cable Harnessing and Bundling
GT7 is designed for cable harnessing and bundling across electrical, automotive, marine and industrial applications.
The flexible PVC backing can follow cable bundles, while the adhesive and snap-back memory help create a firm wrap.
When harnessing cables:
- Confirm that all cables are suitable for bundling.
- Avoid sharp bends.
- Do not wrap connectors under excessive tension.
- Maintain access to required labels.
- Avoid covering damaged insulation.
- Do not trap excessive heat.
- Keep the finished loom clear of moving parts.
- Inspect the assembly before use.
Cable bundling can alter heat dissipation. The electrical load, cable ratings and installation method must still be considered.
Identification and Colour Coding
GT7 is manufactured in multiple colours to support circuit identification, phase marking and organised cable systems. Tenacious currently promotes the range in 11 colours.
Black may be used within an organisation’s identification system for:
- General-purpose cable groups
- Equipment ownership
- Department identification
- Cable length categories
- Tested equipment
- Production packages
- Rack wiring
- Spare inventory
- Temporary workshop labels
- Non-colour-specific cable repairs
There is no universal meaning for every piece of black tape. Any internal identification system should be documented and communicated to technicians.
Never cover original equipment ratings, test tags, serial numbers or required warning labels unless those details are duplicated in a visible and compliant location.
Automotive and Marine Applications
Tenacious lists automotive and marine work among GT7’s intended markets.
Potential uses may include:
- Cable harnessing
- Wiring identification
- Supplementary abrasion protection
- General electrical maintenance
- Bundling low-voltage wiring
- Marking components
- Protecting suitable terminations
- Workshop repairs
Automotive and marine environments may expose tape to heat, vibration, oil, chemicals, moisture and movement. Suitability should be confirmed for the exact position and operating conditions.
For critical connections, sealed connectors, heat-shrink products, conduit or manufacturer-approved repair systems may be required instead of—or in addition to—electrical tape.
Industrial, Manufacturing and Workshop Uses
Tenacious also identifies GT7 for a range of industrial tasks, including component identification, cable harnessing, drum and tube sealing, pipework colour coding and masking during chemical or electroplating processes.
Potential users include:
- Electrical contractors
- Manufacturing facilities
- Equipment builders
- Production workshops
- Warehouses
- Automotive workshops
- Marine technicians
- Maintenance departments
- Construction trades
- AV service departments
Where the tape is exposed to chemicals, solvents, oils or cleaning products, test compatibility under actual working conditions before widespread use.
Surface and Cable Preparation
Electrical tape performs best when applied to a clean, dry and compatible surface.
Before application:
- Isolate electrical power where required.
- Inspect the cable or component for damage.
- Remove dust, oil, grease and moisture.
- Allow the surface to dry completely.
- Apply the tape smoothly with controlled tension.
- Maintain consistent overlap.
- Avoid wrinkles and trapped contamination.
- Finish the final wrap with reduced tension.
- Press the tape end down firmly.
- Inspect and test the completed work.
Cold, contaminated or wet surfaces may reduce adhesion.
Do not apply electrical tape over active arcing, overheating, exposed live conductors or unidentified faults.
Important Electrical Safety Considerations
GT7 is a professional insulation tape, but safe electrical work depends on the complete system—not the tape alone.
Before using it, consider:
- Circuit voltage
- Cable insulation rating
- Conductor condition
- Environmental exposure
- Operating temperature
- Mechanical protection
- Required electrical tests
- Applicable standards
- Equipment instructions
- Installer qualifications
Electrical systems must be isolated before repair or modification where required. Work should be completed by an appropriately trained, qualified or authorised person.
The tape should not be used to:
- Repair severely damaged cables without assessment
- Replace cable glands
- Replace compliant connectors
- Cover overheated conductors
- Hide exposed copper
- Bypass circuit protection
- Join mains conductors as the sole insulation method
- Replace fire-rated sealing
- Repair load-bearing components
- Conceal an electrical fault
When there is any uncertainty, the cable or equipment should be removed from service and inspected.
Storage and Handling
Store GT7 in a cool, clean and dry location away from direct sunlight, excessive heat and moisture.
For workshops, warehouses and touring inventory:
- Rotate older stock first
- Keep rolls protected from dust
- Avoid crushing the roll edges
- Do not leave rolls in hot vehicles for long periods
- Keep unused rolls dry
- Inspect aged stock before critical work
- Protect rolls from oils and solvents
Poor storage can affect the tape’s unwind, adhesion, flexibility and finish.
Product Specifications
Brand: Tenacious
Product code: GT7
Product type: PVC electrical insulation tape
Colour: Black
Width: 19mm
Length: 20m
Thickness: 0.18mm
Backing: Lead-free, high-grade polymeric PVC / PPVC
Adhesive: Cross-linked solvent-based rubber-resin
Thermal stability: Up to 80°C
Flame behaviour: Flame retardant and self-extinguishing
Flexibility: Highly flexible and conformable
Hand tearable: Yes
Resistance: Good UV and water resistance
Adhesive system: Non-corrosive
Compliance: RoHS compliant
Primary applications: Electrical insulation, cable harnessing, identification, bundling, abrasion protection and general electrical maintenance.
Why Buy Tenacious GT7 Electrical Tape from GigLife?
GigLife supplies professional tapes, connectors, cables, consumables and technical accessories selected for entertainment, production and technical environments.
Backed by more than 25 years of hands-on live entertainment industry experience, GigLife understands the practical requirements faced by technicians working across live events, theatre, touring, AV, film, television, broadcast and venue operations.
Tenacious GT7 Black Electrical Tape is suited to customers including:
- Production companies
- Theatres and performance venues
- Film and television departments
- Touring crews
- AV suppliers
- Lighting departments
- Audio departments
- Equipment workshops
- Broadcast facilities
- Schools and performing arts centres
- Festivals
- Conference and exhibition suppliers
Orders are dispatched from Brisbane, with Australia-wide shipping available.
GigLife is proudly by the professionals… for the professionals.
