Tungsten carbide is an inorganic chemical compound which contains numbers of tungsten and carbon atoms.  Tungsten carbide, also known as “cemented carbide”, “hard alloy” or “hardmetal”, is a kind of metallurgic material which contains tungsten carbide powder (chemical formula: WC) and other binder (cobalt, nickel. etc.).

It can be pressed and formed into customized shapes, can be grinded with precision, and can be welded with or grafted to other metals. Various types and grades of carbide can be designed as required for use in application intended, including chemical industry, oil & gas and marine as mining and cutting tools, mould and die, wear parts, etc

Tungsten carbide is widely used in industrial machinery, wear resistant tools and anti-corrosion. Tungsten carbide is the best material to resist heat and fracture in all hard face materials.

Tungsten carbide(TC) is widely used as seal faces or rings with resistant-wearing,high fractural strength,high thermal conductivity, small heat expansion co-efficient.The tungsten carbide seal-ring can be divided into both of rotating seal-ring and static seal-ring.

The two most common variations of tungsten carbide seal faces/ring are cobalt binder and nickel binder.

Tungsten carbide seals is provided to prevent pumped fluid from leaking out along the drive shaft. The controlled leakage path is between two flat surfaces associated with the rotating shaft and the housing respectively. The leakage path gap varies as the faces are subjected to varying external load which tend to move the faces relative to each other.

At Guanghan N&D Carbide Co., Ltd, we manufacture high-performance Tungsten Carbide Flat Seal Rings engineered specifically for demanding mechanical seals in fluid control, oil & gas, chemical processing, and heavy-duty pumping systems.
Leveraging 22 years of heavy-industry legacy, our carbide seal rings (including rotary rings and stationary seats) are designed to withstand severe erosion, extreme pressure, and corrosive environments, ensuring zero-failure operations for your equipment.

100% Non-Standard Customization Capabilities

We support complete non-standard custom manufacturing tailored entirely to your technical drawings and exact tolerance requirements. Whether you require standard dimensions or highly complex, irregular flat seal rings with mirror-surface polishing, we meet your personalized needs flawlessly.

Material Specifications & Technical Grades
To ensure maximum equipment lifespan and product reliability, we match the optimal carbide grades based on your specific workpiece material and operating mediums (such as acidic fluids or high-sand slurry):

Fine Grain Grades (e.g., YG6X): Hardness 90.5 - 92.0 HRA, TRS ≧2300N/mm2 Highly recommended for extreme wear resistance and high-stress impact environments.

Cobalt-Based Binder Alloys: Exceptional mechanical strength for standard heavy-wear sealing.

Nickel-Based Binder Alloys: Premium corrosion-resistant solutions designed for acidic, alkaline, or severe marine conditions.

Key Product Features & Benefits

Extreme Wear & Corrosion Resistance: Extends the service life of mechanical seals by 3 to 5 times compared to standard metal rings.

Ultra-High Flatness & Surface Finish: Precision lapping and mirror polishing achieve a flatness within 0.01-0.02mm, preventing any hazardous liquid or gas leakage.

API & ISO Certified Quality: Manufactured under strict quality assurance tracking in our source workshop, ensuring flawless consistency from sample to mass production.

Factory-Direct Cost Optimization: Skip the middleman trading companies and save 30-40% on procurement costs directly from the source factory if choose L26 material grade.

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Email: info@ndcarbide.com

WhatsApp: +86-18909022002

Website: www.ndcarbide.com