Wholesale High Temperature Silicone Rubber Self-Adhesive Tape Manufacturers, OEM/ODM Factory - Ningguo Zhongdian Insulation Material Co., Ltd

PART NO.	WIDTH/mm	THICKNESS/mm	ROLL LENGHT/M
ZDSR-T-A-025	25	0.5/1.0	10/20
ZDSR-T-A-030	30	0.5/1.0	10/20
ZDSR-T-A-040	40	0.5/1.0	10/20
ZDSR-T-A-050	50	0.5/1.0	10/20

Product Introduction

This silicone rubber self-adhesive tape is manufactured from inorganic silicone rubber with high-temperature resistance and self-bonding properties. The tape features an easy-peel protective layer and can be used continuously at temperatures up to 250°C. The tape is available in red and black as standard, with custom colors available upon request. The tape is essential for high-voltage cable joints, switches, and outdoor wrapping in power supply systems, for protecting large equipment near metallurgy and chemical plants, and as a required wrapping material for cable accessories. Applications include light rail tunnels, vehicle factories, steel plants, automotive industry, shipyards, power plants, aerospace, naval ships, trains and railroads, underground construction, and as waterproof tape.

Core Advantages

Self-Adhesive Bonding

The tape bonds to itself under tension without additional adhesives. Forms a seamless, homogeneous layer that conforms to irregular shapes.

250°C Continuous Operation

Continuous operating temperature up to 250°C. Suitable for high-temperature electrical and industrial applications.

Inorganic Silicone Rubber Construction

Manufactured from inorganic silicone rubber with excellent electrical insulation, weather resistance, and chemical stability.

High-Voltage Electrical Insulation

Provides essential electrical insulation for high-voltage cable joints, switches, and outdoor power system components.

Waterproof Protection

The tape forms a moisture-tight seal, protecting electrical connections and equipment from water ingress and corrosion.

Easy-Peel Protective Layer

Protective liner prevents premature bonding during storage and handling. Removes cleanly without residue.

Product Features

Base material Inorganic silicone rubber. Self-bonding properties. Continuous temperature rating: -50°C to +250°C.

Dielectric strength 20-25 kV/mm. Provides essential electrical insulation for high-voltage applications up to 35kV class systems.

Available colors Red (standard), Black (standard). Custom colors available upon request with minimum order quantity.

Available widths 19mm, 25mm, 38mm, 50mm. Standard roll lengths: 5m, 10m, 15m. Custom sizes available.

Available thicknesses 0.5mm, 0.8mm, 1.0mm. Thicker tapes provide increased mechanical protection and dielectric strength.

Elongation at break 300-500%. The tape stretches for conformable wrapping around irregular shapes and cable joints.

Technical Specifications

Parameter	Specification
Continuous operating temperature	-50°C to +250°C
Dielectric strength	20-25 kV/mmVolume resistivity>1×10¹⁴ Ω·cmAvailable widths19mm, 25mm, 38mm, 50mmAvailable thicknesses0.5mm, 0.8mm, 1.0mmStandard roll length5m, 10m, 15m rollsElongation at break300-500%Tensile strength>5 MPaWater absorption (24 hours)<0.1%Ozone resistanceExcellent (no cracking after standard ozone exposure)UV resistanceGood (may discolor over time but maintains electrical properties)Standard colorsRed, Black (custom colors available)

Parameter

Specification

Continuous operating temperature

-50°C to +250°C

Dielectric strength

20-25 kV/mmVolume resistivity>1×10¹⁴ Ω·cmAvailable widths19mm, 25mm, 38mm, 50mmAvailable thicknesses0.5mm, 0.8mm, 1.0mmStandard roll length5m, 10m, 15m rollsElongation at break300-500%Tensile strength>5 MPaWater absorption (24 hours)<0.1%Ozone resistanceExcellent (no cracking after standard ozone exposure)UV resistanceGood (may discolor over time but maintains electrical properties)Standard colorsRed, Black (custom colors available)

Application Scenarios

High-voltage cable joints and terminations

Power supply system switch wrapping

Outdoor electrical equipment protection

Metallurgy plant equipment insulation

Chemical plant cable protection

Light rail tunnel electrical systems

Steel plant and automotive wiring

Shipyard and naval electrical insulation

Aerospace and railway cable wrapping

Underground construction waterproofing

This silicone rubber self-adhesive tape is essential for high-voltage cable joints and terminations in national power supply systems, providing primary electrical insulation for up to 35kV class applications. The tape wraps switches and outdoor electrical equipment, protecting against moisture, UV radiation, and environmental contaminants. Metallurgy plants use the tape for large equipment cable protection near furnaces and hot processing areas. Chemical plants apply the tape to protect instrumentation cables from corrosive atmospheres. Light rail tunnels and vehicle factories use the tape for electrical system insulation and waterproofing. Steel plants and the automotive industry use the tape for wiring harness protection in high-temperature zones. Shipyards and naval applications require the tape for waterproof electrical insulation in marine environments. Aerospace, railway, and train electrical systems use the tape for cable bundling and protection. Underground construction projects rely on the tape for waterproofing electrical connections and junction boxes.

Common Questions and Solutions

How does the self-bonding mechanism work?

The silicone rubber tape bonds only to itself, not to the underlying surface. When stretched and wrapped, the tape layers fuse together, forming a single homogeneous rubber mass. This provides a seamless, void-free insulation layer that conforms perfectly to the wrapped object. The bond strength increases over time and with temperature.

What is the proper application method for the tape?

Remove the protective liner. Stretch the tape to 100-200% of its original length while wrapping. Overlap each turn by 50% of the tape width. Continue wrapping with tension until the end, then release the tension and press the end firmly onto the previous layer. The tape will self-bond within minutes. Do not wrap without tension as this will not activate the self-bonding property.

Can the tape be used for primary electrical insulation on live conductors?

Yes. The tape has dielectric strength of 20-25 kV/mm and is suitable for primary electrical insulation on conductors up to 35kV class when applied according to the manufacturer's instructions. For high-voltage applications, follow relevant electrical standards for the number of half-lapped layers required.

Is the tape resistant to moisture and chemicals?

The tape is highly resistant to water, moisture, and many chemicals including dilute acids and alkalis. It has very low water absorption (<0.1% over 24 hours). The tape is also resistant to ozone, UV radiation, and weathering. It is not recommended for continuous immersion in fuels or solvents.

What is the shelf life of the silicone rubber tape?

When stored in a cool, dry place away from direct sunlight at temperatures below 30°C, the tape has a shelf life of 24 months from the date of manufacture. Store the tape in its original packaging. High temperatures or humidity may reduce shelf life.

Can the tape be removed after application?

The tape can be cut away with a knife or scissors. It does not leave adhesive residue on the underlying surface. However, the self-bonded layers cannot be separated once fused. For temporary applications, do not stretch the tape as much; less stretch reduces bond strength and allows easier removal.

Installation and Handling Considerations

Clean and dry the surface of the cable, joint, or equipment before application. Remove oil, grease, dust, and moisture for optimal electrical insulation performance.

Apply the tape with 50% overlap and 100-200% stretch. The stretch is critical for activating the self-bonding property. Do not wrap with zero tension as the tape will not bond to itself.

For high-voltage cable joints (10kV-35kV), apply multiple layers. Typically 3-5 half-lapped layers provide adequate insulation. Follow the specific application instructions for your voltage class.

For outdoor applications, ensure the tape completely covers the protected area with no exposed gaps. The tape will withstand UV exposure but may discolor over time; discoloration does not affect electrical properties.

The tape begins self-bonding immediately upon contact under tension. Position the tape correctly during the first wrap, as repositioning may be difficult once the layers fuse.

Inspect the tape periodically for mechanical damage. The silicone rubber resists aging but can be cut or torn by sharp objects. Replace the tape if physical damage is visible or if electrical testing indicates insulation degradation.