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PRODUCTS

Specializing in the production of highquality silicone rubber products

PRODUCT

Specializing in the production of highquality silicone rubber products

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Large diameter Silicone tube for corona machine

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Large diameter Silicone tube for corona machine

Factory in China more than 28 years of production management experience, only to provide customers with high-quality corona silicone tube, corona silicone tube is also known as spark machine, discharge rack, spark rack silicone tube, etc., this kind of accurate keyword name is also the annual new product of silicone extrusion, its advantage is that the size breaks through the traditional corona silicone tube can be more than 200mm size, And can work normally at high temperature for a long time.

Product Features

• Silicone tube is widely used in high temperature machinery, roller heat dissipation

• Size from 1~200mm can be produced, no collapse and no eccentricity

• Bending resistance is not easy to deform, with good holding force and shrinkage

• Excellent high temperature resistance, long-term temperature resistance within 300° range

• Stable fatigue life, suitable for high-intensity work

• Color size can be customized production by drawing and sample

Application

Baby Daily Necessities	State Grid	BS/COM/ESS	Optoelectronics industry
mechanical seal	New energy vehicles	Home appliance	Sports equipment

Parameters

Product Features

• Silicone tube is widely used in high temperature machinery, roller heat dissipation

• Size from 1~200mm can be produced, no collapse and no eccentricity

• Bending resistance is not easy to deform, with good holding force and shrinkage

• Excellent high temperature resistance, long-term temperature resistance within 300° range

• Stable fatigue life, suitable for high-intensity work

• Color size can be customized production by drawing and sample

Application

Baby Daily Necessities	State Grid	BS/COM/ESS	Optoelectronics industry
mechanical seal	New energy vehicles	Home appliance	Sports equipment

Product Detail

Large Diameter Silicone Tube | Corona Treater | High Voltage Insulation | Yutian

Yutian · Three factories one chain – from raw silicone to finished tube

Large Diameter Silicone Tube

High voltage resistance · Anti‑corona discharge · -40°C to +200°C

✓ Corona treaters✓ Printing & plastic processing✓ High voltage equipment

High voltage · anti‑coronaDielectric ≥25kV/mm-40°C to +200°CID 20‑300mm customCorona treater specific

Tensile ≥7.0 MPaElongation ≥350%Excellent insulationFree samples

Three factories · Full industry chain synergy

🧪

Guilin Yutian

Silicone raw material

⚙️

Dongguan Huahong

Compounding & auxiliaries

🏗️

Dongguan Yutian

Precision extrusion & finishing

Raw materialCompoundingExtrusionFinished tube

Why Yutian large diameter silicone tube for corona treaters

⚡

High voltage & anti‑corona

Withstands high voltage · prevents corona discharge

Special formulation resists electrical breakdown and surface discharge. Eliminates leakage and short‑circuit risks in corona treatment systems.

→ Protects electrodes, improves treatment efficiency

🌡️

Wide temperature range

-40°C to +200°C (optional 300°C)

Stable performance under high heat – no softening, no cracking. Resists thermal aging.

→ Reliable in continuous corona operation

🛡️

Excellent electrical insulation

Dielectric strength ≥25 kV/mm

Provides reliable insulation for high voltage electrodes and high‑frequency generators.

→ Safe operation, reduced maintenance

📏

Large diameter & uniform wall

ID 20‑300mm · wall 2‑15mm

Even wall thickness ensures consistent dielectric strength and pressure resistance. Good flexibility for easy installation.

→ Tailored to corona treater dimensions

🔧

Full customisation

Custom ID, wall, hardness, colour

Low tooling cost, fast sampling. Suitable for corona treaters, printing machines, plastic film treaters.

→ Perfect fit for your equipment

Technical specifications & custom range

Parameter	Standard range	Custom range
Material	High voltage resistant silicone (industrial / high insulation grade)
Inner diameter (mm)	50 – 200	20 – 300
Wall thickness (mm)	3 – 10	2 – 15
Hardness (Shore A)	60 ± 5	50 – 80
Temperature range	-40°C to +200°C	Up to 300°C optional
Dielectric strength	≥25 kV/mm	Higher on request
Tensile strength	≥7.0 MPa	Up to 9.0 MPa
Elongation at break	≥350%	—
Colour	Black / white / red	Custom colours
Certifications	RoHS, REACH, third‑party dielectric test reports

Typical applications

⚡

Corona treaters

Electrode insulation, discharge assembly covers

🖨️

Printing industry

Corona treatment systems for films & substrates

🔧

Plastic processing

Film surface modification, sheet treaters

⚡

High voltage equipment

HV generator outputs, electrostatic systems

💻

Electronics / semiconductor

High voltage test fixtures, static eliminator tubing

🔋

Energy storage

High voltage battery insulation, HV busbars

Made to your specification

Custom inner diameter 20‑300mm

Wall thickness 2‑15mm

Hardness 50‑80 Shore A

High voltage rating (custom dielectric strength)

Any colour & length

Low tooling fee (deductible)

🎁 Cooperation benefits

📦

Free samples

Stock sizes free (shipping cost applies)
Test voltage resistance first

🎨

Custom development

Sample in 7‑10 days for custom specs
Low MOQ for trials

⚡

Fast delivery

Stock 2‑4 days · custom 7‑10 days
Expedite available

Certifications & quality

⚡

Dielectric test

≥25kV/mm

Passed

🌡️

High temp test

200°C aging

Passed

📜

RoHS / REACH

Compliant

Certified

⭐ National High‑tech Enterprise | 🏭 ISO 9001 certified

Customer feedback

“Yutian‘s large diameter silicone tube solved our corona discharge problem. High voltage insulation is reliable, wall thickness uniform, and installation easy. Will recommend to other corona treater manufacturers.”

— Technical Director, Guangdong Corona Equipment Manufacturer

Frequently asked questions

What is the maximum voltage this tube can withstand?

Dielectric strength ≥25 kV/mm. Higher ratings can be customised for specific applications.

Does it prevent corona discharge effectively?

Yes. The material is formulated to resist surface discharge and corona, protecting electrodes and improving treatment uniformity.

What temperature range can it handle?

Continuous operation -40°C to +200°C. Optional high‑temp grade up to 300°C available.

Can I get a custom ID larger than 200mm?

Yes, custom inner diameter up to 300mm is possible. Please provide your required size.

Is it suitable for other high voltage equipment besides corona treaters?

Absolutely. Also used in high voltage generators, electrostatic systems, and HV test fixtures.

How fast can I get a custom sample?

Free samples of stock sizes within 3 days. Custom size/colour samples in 7‑10 days; tooling fee deductible.

Need large diameter high voltage silicone tubing for corona treaters?

Contact Yutian for free samples, dielectric test reports, and custom solutions.

Request a quote →

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