China Ceramic Alumina Tube manufacturer

High Voltage Ceramic Electrical Insulators Polished Surface Wear Resistance

Product Details:
Place of Origin: Hunan, China
Brand Name: Jinghui ceramics
Certification: RoHS, REACH, ISO
Model Number: JH-MCI-014
Payment & Shipping Terms:
Minimum Order Quantity: 10 Piece/Pieces
Price: Negotiable
Packaging Details: 1.Inner packing: Vaccum polybag with dessciant; 2.Outer package:Export carton with protective stuffs; 3.Wooden case will be used if needed
Delivery Time: 5~6 weeks
Supply Ability: 500000 Piece/Pieces per Month

Detail Information

Features: Good Gas Tightness, High Bonding Strength Product Name: Ceramic Metallised Insulator
Type: Ceramic Parts Material: Alumina Ceramic
Color: White, Pink Availability Max. Diameter: Up To 800mm
Tolerance: Best To Be 0.01mm Treatment: Glazed, Polishing
Certificate: ISO9001:2008/SGS/ROHS Application: For Gas Discharge Devices
High Light:

ceramic wire insulators


ceramic standoff insulators

Product Description

High voltage Alumina Ceramic Metallised Insulator for Gas Discharge devices

Product Description

We manufacture a board range of customized ceramic metallised insulators in different materials, mainly including alumina, zirconia, beryllia and so on, from pressed ceramics for your packages to produce a part of hermetically sealed assemblies. With the state of the art metallization process and veteran experience, we offer a selection of metallization types to meet special needs from different customers.

High Voltage Ceramic Electrical Insulators Polished Surface  Wear Resistance 0




























Jointing types:

● Alumina ceramic body +  Molybdenum (Mo/Mn) metallization     

Alumina ceramic body +  Silver (Ag)  plating 

Alumina ceramic body +  Mo/Mn metallization + Ni plating

Alumina ceramic body + Tungsten metallization + Au plating 

Alumina ceramic  substrate + copper (Cu) plating 

Cosmetic quality:

● The flatness of both end sides must be less than 0,01mm, or better 

● No blister on nickel ( outer) plating at the temperature up to 1150°C

● No crack on the surface and free of impurities on both external & internal surface

● With evenly glaze distribution on the external cylindrical surface


Key performance parameters

Leak rate


≤1×10-11 Pa•m3 / s


Metal layer tensile strength


≥ 150Mpa


Volume resistivity






(6.5 ~ 8.0) × 10-6 /°C


Insulation strength


≥18kV/mm (D•C)


Dielectric constant


9~10(1MHz, 20°C)


Visual quality: 1. No cracks, no bubbles; 2. Evenly distributed glaze; 3. No contamination




Gas discharge tubes, Electron tubes, Vacuum interrupters, Vacuum breakers, Vacuum capacitor, High power receptacles, Power switches, X-ray tubes, 


Why choose us?

1. Support customized metallized ceramic parts from prototyping to high-volume production.

2. From small -size to large-size capability to meet various different industries needs

3. With over 15 years of OEM, ODM manufacturing experience with the professional teams 

4. With in-house comprehensive production types of equipment from forming to the secondary process.

5. Cost-effective and offer unmatched competitive price with low-level MOQ request.

6. Free samples availability for stocked alumina metalized ceramic insulators for checking.


FAQs (Frequently Asked Questions)



Packaging solution:

1. Vacuum packaging to be a vacuum state with desiccant as an inner package;

2. Then the inner package will be individually packed.

3. Put goods into export cartons, the export carton is filled with protective kinds of stuff.

4. The protective wooden case will be used if needed.

Regular transportation methods:

1. Int'l express, such as DHL, UPS, FedEx  2. Airfreight; 3. Sea freight 


FAQs (Frequently Asked Questions)

 Q1. Is it available to provide customize products?

A: We support custom-made demand as per different dimensions, design, metallization, and plating. 


Q2. When can I get the price?

A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need to get the price, please call us or tell us in your email so that we will proceed with your inquiry as a priority. 


Q3. How long can I expect to get the sample?
A: After you pay the sample charge and send us confirmed files, the samples will be ready for delivery in 4 weeks. The samples will be sent to you via express and arrive in 3-5 workdays. You can use your own express account or prepay us if you do not have an account.

Q4. How long does the whole procedure being worked out?
A: After you place an order, the manufacturing time is about 25 working days. 


Q5. How to ensure quality?

A: The dimension out of any batch will be carried out sampling inspection per International AQL standard. 100% cosmetic inspection will be done. 

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