Exceptional Sealing Performance Flanged Ring-Type Silicon Carbide Ceramic Sealing Washer For High-Pressure Conditions

Flanged Ring-Type Silicon Carbide Ceramic Sealing Washer

Product Introduction

This product is a flanged ring-type silicon carbide (SiC) ceramic sealing washer manufactured using reaction sintering technology. Silicon Carbide (SiC), as a new generation of high-performance ceramic material, possesses hardness close to diamond and exceptional chemical stability. The product features a unique flanged ring design, with a central through-hole combined with a raised peripheral ring structure that creates a perfect sealing interface. The surface is precision polished to a mirror finish, presenting typical dense black ceramic characteristics. This structural design ensures sealing pressure while providing excellent positioning functionality.

Primary Applications

• High-Temperature Sealing: Widely used in dynamic/static sealing rings for chemical pumps, valves, and mechanical seal devices

• Special Equipment Insulation: Serves as high-temperature insulating gaskets in semiconductor equipment and power electronic devices

• Wear-Resistant Mechanical Components: Used as wear-resistant gaskets and positioning rings for bearing sleeves and mechanical guides

• Corrosive Environment Applications: Suitable for mechanical seals in pumps and valves under strong acid and alkali conditions

Product Advantages

• Exceptional Sealing Performance: Hardness up to HRA 94 ensures maintaining a complete sealing interface under high-pressure conditions

• Outstanding Temperature Resistance: Can maintain stable sealing performance long-term in high-temperature environments up to 1650°C

• Excellent Corrosion Resistance: Resistance to acid and alkali corrosion surpasses most metals and engineering plastics

• Superior Wear Life: Wear rate is only 1/5 that of hard alloys, extending service life by 5-8 times

• Low Thermal Expansion Coefficient: Thermal expansion coefficient of 4.2×10⁻⁶/°C ensures dimensional stability at high temperatures

Specifications Table

Manufacturing Process

High-purity silicon carbide powder → Binder addition → Isostatic pressing → Reaction sintering → Rough grinding → Precision polishing → Ultrasonic cleaning → Dimensional inspection → Laser marking → Vacuum packaging

Usage Instructions

1. Pre-Installation Preparation: Clean the sealing contact surface to ensure no scratches or contamination

2. Installation Alignment: Use special installation tools to ensure concentricity between the washer and sealing cavity

3. Clamping Force Control: Recommended clamping force ≤150N/mm² to avoid overload causing breakage

4. Temperature Adaptation: Initial heating should be gradual, with heating rate ≤100°C/h

5. Regular Inspection: Recommended to check sealing surface wear every 2000 hours of operation

After-Sales Service

18-month product quality warranty provided, with customer usage records established. Technical support responds 7×24 hours, emergency requirements supported within 5 working days. Free technical consultation and product selection services offered.

FAQ

1. Q: What is the sealing pressure rating of the washer?
   A: Standard product sealing pressure rating reaches 25MPa, special treatment can achieve up to 40MPa

2. Q: What are the advantages compared to graphite washers?
   A: Strength increased by 10 times, wear resistance improved by 20 times, and no graphite dust pollution

3. Q: Are non-standard size customizations supported?
   A: Complete customization supported, processing according to provided drawings, diameter range 10-500mm, thickness 3-50mm

We are a company with many years of experience in the production of special precision ceramics and the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics.

Deyu Precision Ceramics Technology Co., Ltd. has many years of experience in producing special precision ceramics, and has the ability to design, manufacture, process and sell structural and functional parts of various special precision ceramics. At present, the company has production and processing equipment such as dry press, isostatic press, experimental furnace, flat kiln, machining center, surface grinder, universal internal and external grinder, centerless grinder and laser cutting machine, as well as complete high-precision testing equipment such as high-precision projector, three-dimensional tester, metallographic microscope, hardness tester and densitometer.

With advanced production technology and complete production facilities, the company is one of the few domestic enterprises that can produce special precision ceramic structural parts and functional parts with machining accuracy less than 2 microns, and has strong core competitiveness in the same industry in China.

Advantages of the company: 1. National new technology enterprises; 2. The company has a municipal R&D center; 3. Cooperation with domestic key universities and research institutes; 4. Design, molding, sintering and precision processing; 5. The products cover alumina, zirconia, silicon nitride, silicon carbide and other precision ceramics; 6. Precision plus technology.

The company has always been standing in the position of customers to solve problems, focusing on the principle of quality and delivery time, adhering to the business philosophy of "integrity, innovation and reassurance", and sincerely looking forward to cooperating with you.