John Crane Diamond® Improves Operational Performance on Tungsten Carbide Substrate

John Crane Diamond® Improves Operational Performance on Tungsten Carbide Substrate

Why a Tungsten Carbide Substrate

In certain applications, tungsten carbide offers unique benefits in terms of mechanical properties, including fracture toughness, overall strength and elasticity.

Tungsten carbide substrate is often required on integrally geared, high-speed pumps using a clamped-in mating ring. When the mating ring is clamped between two metallic surfaces, tungsten carbide’s mechanical properties allow it to withstand the clamping. Because of its superior mechanical properties, tungsten carbide can also withstand high-speed centrifugal forces without outside diameter support.

Adding John Crane Diamond® to a Tungsten Carbide Substrate

There are many applications in which adding a seal face technology such as John Crane Diamond to a tungsten carbide substrate can improve mechanical seal performance. Common problems to look for are failure mechanisms such as heat checking, ID chipping, heavy wear and blistering. If evidence of one of these failure conditions is prevalent, adding John Crane Diamond seal face technology to the tungsten carbide substrate can help address these challenges.

John Crane Diamond

Benefits of John Crane Diamond

Diamond is nature’s hardest known substance which leads to reduced face wear. Its low coefficient of friction results in less heat generation. The combination of these two characteristics provides additional protection to seal faces, helping overcome the common challenges mentioned above and extending the life of the mechanical seal.

John Crane Mechanical Seals Challenges

In addition to increasing the mean time between repair (MTBR), adding John Crane Diamond material to a tungsten carbide substrate provides environmental benefits. With less heat generated, the need for cooling water and auxiliary cooling equipment is also reduced, resulting in lower energy consumption and reduced water usage. Compounding these benefits are the associated cost reductions in water consumption, wastewater processing and power usage.

PRODUCT AVAILABILITY: John Crane Diamond is available as an enhancement to many of their most widely used seal families, including:
» T5600 Universal Cartridge Seal Family
» T5800 Slurry Seal Family
» 48VBF Boiler Feed water Seal
» Other High-Performance Sealing Solutions

WHERE IT’S USED: Nearly every industry, including oil and gas, chemical, pharmaceutical, pulp and paper, water and wastewater, power generation and
mining, can use John Crane Diamond to improve reliability and performance of mechanical seals, pumps and other components.

Download Brochure:

John Crane Diamond Brochure


Tencarva Machinery Company offers John Crane products in Arkansas, Florida, Georgia, Indiana, Kentucky, Mississippi, North Carolina, South Carolina, Ohio, Tennessee and Virginia. As an authorized John Crane distributor, Tencarva Machinery Company will sell and service and provide all John Crane products.

About John Crane

John Crane is a global leader in rotating equipment solutions, supplying engineered technologies and services to process industries. The company designs and manufactures a variety of products, including mechanical seals and systems, couplings, filtration systems and digital diagnostics technologies. John Crane customer service is accessed through a global network of more than 200 sales and service facilities in over 50 countries. Global reported revenue for fiscal year 2021 was in excess of $1 billion USD. John Crane is part of Smiths Group, a global leader in applying advanced technologies for markets in threat and contraband detection, energy, medical devices, communications, and engineered components.

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