Company Details

  • Dongguan Mingrui Ceramic Technology Co.,Ltd

  •  [Guangdong,China]
  • Business Type:Manufacturer
  • Main Mark: Americas , Asia , East Europe , Europe , North Europe , West Europe , Worldwide
  • Exporter:31% - 40%
  • Certs:ISO9001, CE, FDA, MSDS, RoHS, Test Report
  • Description:99% Alumina Ceramic Spacer,Zirconia Ceramic Insulation Washer,Zro2 Ceramic Insulation Washer
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Dongguan Mingrui Ceramic Technology Co.,Ltd

99% Alumina Ceramic Spacer,Zirconia Ceramic Insulation Washer,Zro2 Ceramic Insulation Washer

Home > Products > Ceramic Plate And Block > Ceramic Disc > High Alumina Spacer Zirconia Ceramic Insulation Washer

High Alumina Spacer Zirconia Ceramic Insulation Washer

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    Payment Type: L/C,T/T,Paypal,Western Union
    Incoterm: FOB
    Min. Order: 10 Piece/Pieces
    Delivery Time: 20 Days

Basic Info

Model No.: MRT-144

Size: Customized

Max Use Temperature: 1500 ℃

Material: Zirconia

Density: 6.0g/cm3

Feature: Heat Insulative

Color: White,Black

Usage: Ceramic Disc

Name: Zirconia Ceramic Heat Insulative Disc

Additional Info

Packaging: wooden box with foam bag

Productivity: 10000 pieces/month

Brand: Mingrui

Transportation: Ocean,Air

Place of Origin: Dongguan

Supply Ability: 1000000 pieces/ year

Certificate: ISO 9001-2015

Port: Shenzhen,Guangzhou

Product Description

Product Description:

99% Alumina Ceramic Spacer Zirconia Ceramic Insulation Washer

Alumina Ceramic Spacer Ideal for very high temperature conditions. Exceptional strength in compression and tension. Withstands very high voltage without flashover.

Alumina Ceramic Spacer electrically help to isolate components from one another. For instance, you can isolate one sample holder from another sample holder . Available in standard screw sizes. Made from 99.7%+ Al2O3(alumina), these non-porous washers are fully vacuum compatible and bakable to over 400oC.

Can't find the exact size or shape you need? Please fill out our Custom size quote from or call us at 0086 15988537579. We welcome custom product and fabrication projects.

Alumina is the more common name of Aluminium Oxide and is a hard wearing material used for many applications. Once fired and sintered, it can only be machined using diamond-grinding methods.

Alumina Ceramic Spacer is an electrical insulator but has relatively high thermal conductivity (35 W/m K). In its most commonly occurring crystalline form, called corundum or a-aluminium oxide, its hardness makes it suitable for use as an abrasive and as a component in cutting tools.


  • High purity
  • Excellent electrical & thermal insulator
  • Exceptional temperature resistance up to 3000°F (1650°C)
  • Outstanding corrosion resistance to acids, solvents, salts, and organics

Advantage of Zirconia Ceramic Electrical Insulation Washer / Spacer

1. Isostatic pressed.
2. Fire resistance.

3. Superior mechnical strength.
4. High corrosion and wear resistance.
5. High Temperature Resistance.
6. Good Insulation Performance Precision.
7. Zirconia and alumina ceramic material.

They are high corrosion and wear resistance and strong impact resistance and delivers 10 times longer working life than metal plunger. They give a longer life to the sealed packing material.

Black White Ceramic Ring / Washer / Spacer

Porous Alumina Plate

Customized Zro2 Washer

Production process

Alumina Ceramic Blocks

Production range:

Mingrui offers you a wide range of production facilities like extrusion, injection moulding, pressing and casting. Depending on product geometry and quantities, we will choose the suitable technique for your products.For the final finishing of the parts we use CNC machining centres, equipped with diamond tools in order to meet high accuracies.
Our aim is to offer the ideal solution for any application. Our engineers therefore offer custom solutions that range beyond our existing product portfolio. With our well-equipped industrial development facilities, we produce innovations that can be rapidly commercially exploited

The range of products we can make is:Alumina ceramic, Zirconia ceramic , Ceramic Dowel pin, Zirconia Positioning pin, Insulating Ceramic Plate,Ceramic roller,Ceramic Blade,Ceramic brackets,Ceramic Disc,Ceramic insulator, Ceramic Rod ,Ceramic Atomizer,Ceramic Nozzle,ceramic necklace, Ceramic Pin , ceramic bushing, ceramic washer, zirconia ceramic plate, ceramic insert, white ceramic ring, Ceramic Shaft,ceramic pump, Ceramic Piston, , machinable ceramic, ceramic arms and so on.

Ceramic Plunger Pump

The products made by zirconia and alumina products have excellent performances,the properties of our products:

95 Alumina
99 Alumina
g / cm³
3.9 5.95-6.05
Water absorption
0 0 0
Coefficient of thermal expansion
8.5 10.5
Modulus of Elasticity Young's Mod
280 340 210
Poisson's ratio
/ 0.21 0.23 0.3
HV Hardness MPa
1400 1700 1300-1365
Flexural Strength @ room temperature
280 320 950
Flexural Strength @700°C
220 230 210
Compressive Strength @ room temperature
2000 2200 2000
Fracture Toughness
MPa *m 1/2
3.8 4.3 10
Heat conductivity @ room temperature
W/ m*k
18-25 26-30
Electrical Resistivity @ room temperature
Ω*mm2 /m
Max use temperature
1850 2200 1500
Resistance to acid alkaline
Dielectric Constant
9.5 9.8 26
Dielectric Strength
10 10 10
Thermol Shock Resistance
△ T ( °C )
220 190 280-350
Tensile Strength @ 25 °C
200 248 260
Thermal Conductivity(25℃)
30 35 3

Workshop overview:
We have almost all the precision processing machines of ceramic products:

Ceramic Shaft Rod

Quality assurance:

We have complete testing equipment and good after-sales service:

Zirconia Ceramic Plate

Our certifications:

Alumina Ceramic Ring


we will give you quick response to solve your problems at the first time. we also improved our logistics service system so that you can enjoy a one to one intimate service.Each of our product is elaborately packed to insure it is intact when arriving;We cooperate with professional logistics such as DHL UPS,Fedex,etc.and offer realtime tracking data to our customers in time.

Alumina Ceramic TubeCeramic Welding Pin


1.are you manufacturer or trade company?
We are a factory with our own workshop located in Chang'an Town ,Dongguan City,which is known as
[The hometown of mould",We have strong precision processing ability and excellent matching manufacturer.

2.Can you provide the free samples?
Yes, we can provide the sample free of charge if we have the stock product as customer's requirements, but the freight is on your side.

3.Can you accept OEM&ODM?
Yes, we can produce the products according to your demand and drawing.

Looking for ideal 99% Alumina Ceramic Spacer Manufacturer & supplier ? We have a wide selection at great prices to help you get creative. All the Zirconia Ceramic Insulation Washer are quality guaranteed. We are China Origin Factory of Zro2 Ceramic Insulation Washer. If you have any question, please feel free to contact us.

Product Categories : Ceramic Plate And Block > Ceramic Disc

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