China Ceramic Alumina Tube manufacturer

Dielectric Thermostat Ceramics , Ceramic Bushing Customizable Polishing Surface

Product Details:
Place of Origin: China
Brand Name: Jinghui Ceramics
Certification: RoHS, REACH, ISO
Model Number: JH.TC.001
Payment & Shipping Terms:
Minimum Order Quantity: 10000 piece per order
Price: Negotiable
Packaging Details: Plastic bag with export carton
Delivery Time: 3~4 weeks
Payment Terms: T/T, Western Union, MoneyGram, Paypal, , L/C
Supply Ability: 5000000 sets per month

Detail Information

Features: High Insulation, High Mechanical Strength Product Name: Ceramic Insulation Bushing
Material: 95% Alumina, Low Alkali Ceramic Density: 3.65 G/cm3
Color: Pure White Type: Industrial Ceramic Part
Specification: Standard Or Customized Precision Process: Centerless And Flat Grinding
Nominal Tolerance: OD±0.01 Mm, L ±0.1 Mm Application: Ceramic Pin For Thermostat, Temperature Controller
High Light:

ceramic spacers


ceramic insulation parts

Product Description

High Dielectric Strength C220 Steatite Ceramic Insulation Bushing for Iron Thermostat

Main features of ceramic insulating rings:

1. High mechanical strength, the hardness over than 1500Mpa

2. High insulation resistance, the insulation strength up to 18KV/mm.

3. High-temperature resistance, the working temperature can up to 1500℃

4. Good thermal shock, it can withstand the thermal shock around 200 

5. High chemical stability, it will not react with most of strong acid and alkali

6. Quality surface free of any cracks, burrs, impurities, pinholes and so on

7. Cost-effective depend on fully automatic machines and veteran operators

8. Many selections of sizes with ready molds, provide quick and flexible delivery  


Specification of ceramic insulating rings:

1. Available material: alumina, low alkali ceramic, steatite

2. Shaping methods: Dry pressed, hot pressed via automatic mold

3. Color available: pure  white, blue, pink, black optional

4. Size: out diameter and length as per physical specification or drawing

5. Secondary process: vibrating polish, centerless grinding and so on.


Description of ceramic insulating rings

Our factory produces numerous ceramic components for the steam iron bimetal type thermostat. They are made of alumina, steatite or low alkali ceramics. All the materials we used are famous for their high insulation resistance, dielectric strength, excellent thermal properties, and super mechanical strength.
Besides ceramic insulating rings,  we also manufacture ceramic insulating pins, ceramic insulating bushes, ceramic insulating spacers, ceramic insulating bases, ceramic insulating holders and so on. All of them are with a selection of specifications with our own molds, additionally,  we support customized ceramic parts for various adjustable bimetal thermostats. All ceramic insulating pins we supplied are free of crack, burr, pinholes, impurities, with a dense, smooth surface.

Whatever, it's prototyping case or high volume production need, we are able to meet you completely.


Comparison of different material thermostat ceramics

General Item Unit Material
95% alumina Steatite Low alkali ceramic 
Density g/cm 3 ≥3.60 ≥2.7 ≥2.4
Water Absorption % 0 0 ≤ 0.50%
Hardness (HV) Mpa 1500 800 600
Max. service temperature 1550 1000 ≤1200
Thermal conductivity(at 25℃) W.(m.K) -1 5.0~8.0 7.7~8.0 1.26
Coefficient of thermal expansion
( 20~300℃)
1×10 -6 /℃ 24 2.5 9
Volume resistivity (at 25℃) >1 x 10 14 1 x 10 13 >10 12
Dielectric strength KV/mm 18 10 ≥13
Dielectric constant( 20 °C) (1MHz) 9.5 5.8 6



Application :

These ceramic pins are widely used in a variety of KST adjustable bimetal thermostats, steam iron thermostats. temperature control switch.

Dielectric Thermostat Ceramics , Ceramic Bushing Customizable Polishing Surface 0     Dielectric Thermostat Ceramics , Ceramic Bushing Customizable Polishing Surface 1


Packaging proposal:

1. We will keep the ceramic parts inside the inner package to be fixed without moving, then it will prevent them from collision each other, to avoid any cause any chippings during transportation.

2. In addition, the inside of the outer carton will be filled with sufficient protective kinds of stuff. 


Dielectric Thermostat Ceramics , Ceramic Bushing Customizable Polishing Surface 2


Why choose us?

★ 10+ Years of manufacturing experience in OEM, ODM                  ★ Powerful R&D, mass production capability
★ In-house comprehensive manufacturing types of equipment         ★ Rigorous quality control system and processes
★ Surpassing pre-sales and after-sales service                                 ★ Abide all orders as the first priority

FAQs (Frequently Asked Questions)

Q1. Are you a factory or trading company?
A: We are a manufacturer. You are welcome to visit our factory.
Q2: Do you send a sample to check?
A: Sure, the sample is free and freight collect.
Q3: When will you ship it?
A: If the products are in storage, we'll ship within 48 hours
Q4: When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If you are in urgent need of getting the price.
Please call us or tell us in your email so that we will proceed with your inquiry as a priority.
Q5: Is it available to provide customized products?
A: We always support custom-made demand as per different materials, dimensions, and designs.
Q6: How to ensure quality?
A: The dimension out of any batch will be carried out sampling inspection per international AQL standard. A 100% cosmetic inspection will be done.
Q7: What other products are you dealing with?
A: We focus on a variety of ceramic tubes, ceramic substrates, ceramic sheets, textile ceramics besides metalized ceramics.

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