Dongguan Ming Rui Ceramic Technology Co., Ltd

About Us
Factory Tour
Quality Control
Contact Us
Home ProductsCeramic Seal Rings

Anti Crack Black Ceramic Seal Rings / Ceramic Watch Bezel Curved Approved

Anti Crack Black Ceramic Seal Rings / Ceramic Watch Bezel Curved Approved

  • Anti Crack Black Ceramic Seal Rings / Ceramic Watch Bezel Curved  Approved
Anti Crack Black Ceramic Seal Rings / Ceramic Watch Bezel Curved  Approved
Product Details:
Place of Origin: China,Guangdong
Brand Name: Mingrui
Certification: ISO9001:2015,,CE
Model Number: Customized
Payment & Shipping Terms:
Minimum Order Quantity: 1 pieces
Price: negotiable
Packaging Details: Packed in PP bags or sponge tray, then put in standard export carton packing.
Delivery Time: 15-25 working days after the order confirmed
Payment Terms: Western Union, L/C, T/T, D/P, D/A, MoneyGram
Supply Ability: 500 pieces week
Contact Now
Detailed Product Description
Features: Curved , Black Color Name: Ceramic Insert Ring
Forming Way: Carving Usage Temperature: 1800℃
Working Pressure: 10MPa Material: Zirconia
Electrical Insulation: Excellent Feature: Anti Crack
Business Type: Manufacturer
High Light:

ceramic mechanical seal


zirconia ceramic ring

Anti Crack Black Ceramic Watch Bezel Curved / Ceramic Insert Ring
Key words : Ceramic Insert Ring



The item for sale is a brand new aftermarket replacement Aluminum Swiss bezel insert in black with silver font. It fits Mens Omega Seamaster Quartz 300m watch.

This item is guaranteed to fit your watch without glue,unlike other sellers who require glue for their inserts to stick on your watch. The glue spreads all over and ends up ruining your expensive watch.

This is a high quality insert with a glossy and reflective finish just like your original. The color and font are just like OEM. You will not be able to tell the difference.

Free installation instruction sheet with purchase.These inserts are better quality compared to other sellers online.

Comments from our customers, who are retail store owners, collectors and owners of Omega Seamaster watches, have said that we offer the finest inserts of OEM quality to our customers.

Insert is sent in bubble envelope.


All Customers Please Read The Following Before Purchasing:


Be sure to check our detailed measurement guide below or in the photos/images section of the listing to assist you with purchasing the correct parts for your watch. The guide will show you how to measure the lug width opening of your watch using a ruler, how to check your model number, and assist you with other questions you may have regarding measurement. Many watches appear the same but may be different in case size or year model. This will help to avoid any returns or exchanges. We are also an email away to assist with any questions you may have. Thank you for your business!



 Advantages  of ceramic insert ring : 

1. abrasion-resistant formulations, dry-pressed molding.

2. The chemical stability is better, high temperature resistant,abrasion resistant and corrosion resistant.
3. The ceramic body is compact, and the mechanical strength is high.
4. OD tolerance≤±0.02mm, ID tolerance≤±0.1mm,High tolerance≤±0.05mm, Parallelism≤0.02mm.
5. Plane mirror-polished,the surface without pores,without miscellaneous points,without scratches and cracks.

Ceramic Insert Ring Application:
1. Industrial Insulating, Sealing and protecting materials
2. Electric and thermal insulation materials for electric industryInsulation materials for instrument-equipment
3. Insulating materials for motor industry
4. Filling materials for expansion slot
5. Isolating materials as the sinter resistance
6. Sealing gasket for molten metal
Ceramic Insert Ring  Advantage:
1. Low thermal conductivity
2. Low thermal capacity
3. Resistance to thermal shock
4. Does not asbe stos, excellent corrosion resistance, does not react with modern aluminum
5. Excellent electric isolation and sound insulation
6. Strong but pliable in texture, highly pressure resistance.

We custom as per your size, if you have the drawings, it will be better for us to work out the cost.
Properties sheet of alumina ceramic : 
Properties Units 95 Alumina 99 Alumina
Density g / cm³ 3.65 3.92
Water absorption % 0 0
Coefficient of thermal expansion 10-6/K 7.9 8.5
Modulus of Elasticity Young's Mod GPa 280 340
Poisson's ratio / 0.21 0.22
HV Hardness HV MPa 1400 1650
Flexural Strength @ room temperature MPa 280 310
Flexural Strength @700°C MPa 220 230
Compressive Strength @ room temperature MPa 2000 2200
Fracture Toughness MPa *m 1/2 3.8 4.2
Heat conductivity @ room temperature W/ m*k 18-25 26-30
Electrical Resistivity @ room temperature Ω*mm2 /m >1015 >1016
Max use temperature °C 1500 1750
Resistance to acid alkaline / high high
Dielectric Constant / 9.5 9.8
Dielectric Strength KV/mm 16 22
Thermol Shock Resistance △ T ( °C ) 220 180-200
Tensile Strength @ 25 °C MPa 200 248

Product Picture:
Anti Crack Black Ceramic Seal Rings / Ceramic Watch Bezel Curved  Approved 0
Anti Crack Black Ceramic Seal Rings / Ceramic Watch Bezel Curved  Approved 1
Anti Crack Black Ceramic Seal Rings / Ceramic Watch Bezel Curved  Approved 2
Company Introduction:
Dongguan Ming Rui Ceramic Technology Co., LTD., a professional manufacturer of machined ceramic parts, has 10 senior engineers and lots of technicians. We produce strengthened structure zirconia ceramic bar, ceramic tube, ceramic shaft, ceramic plate, ceramic sleeve, ceramic valve, ceramic plunger and ceramic arm. The products are applicable to instruments, medical instruments, clocks and electronic products, mills, energy and power, machine and metals, autocar and military and some other high-end areas.
In cooperation with Tsinghua University, we've achieved great successes in particular requirements. With our professional knowledge and business experience in machined ceramic parts, low-budget and high-performance new ceramic products are made of high–quality raw materials. The value of our ceramic products is greatly increased due to the composite technology and precise processing.
Our high efficiency machined ceramic parts, perfect service and good reputation roots in our professional machined ceramic technology, continuous innovation, great sincerity and our pursuit for sustainable development. We have a unique technnology called “mirror polishing” that has improved the brightness, color, smoothness of our ceramic parts.
Factory Shows
Anti Crack Black Ceramic Seal Rings / Ceramic Watch Bezel Curved  Approved 3


1. Are you a manufacturer ?
Yes we are a ceramic manufacturer . We proceed with the whole process start from Powder material to forming , sintering , machining, marking , inspection , packing , we do the whole process .
2.Can you produce free samples for me ?
Yes usually , we can produce free samples for you but it is up to the product complexity .
3.What terms can you accept for payment ?
T/T, L/C , Western union , Money Gram and Paypal is welcome , but paypal and western union only for small -sum payment.


Custom OEM will be shipped within 15 days after determining the parameters
The samples will be shipped within 3 days
Quick Delivery Via Fedex,DHL,UPS,TNT Etc.
Support customer to designate shipping company
For more informations (the price,delivery time,moq etc)about the ceramic plates, please contact us or



CEO: Admin deng

Dongguan Mingrui Ceramic Tech. Co. Ltd.

Add: No.21 Chuangxing Rd., 2nd Industrial Zone of Shangsha,

Chang'an town, Dongguan city, Guangdong, China 523867



1. Monthly Capacity: 50,000-60,000 pcs;
2. Material: OEM or as per your suggestion;
3. Lead time: about 7-20 days, pls confirm the quantities required;
4. Incoterm: FOB, CFR, CIF;
5. Delivery Cost: It is determinated by the destination port;
6. Payment Term: PayPal; T/T; L/C.
7. Shipment: by sea, by air, by courier, by post, etc.

Contact Details
Dongguan Ming Rui Ceramic Technology Co.,ltd

Contact Person: Admin deng

Tel: 86-18122974730

Send your inquiry directly to us (0 / 3000)