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Carbon Graphite Mechanical Seal Rings

St. Marys Carbon custom manufactures a variety of seals grades to suit any application. We offer blank stock, various impregnations and have the capability to machine intricate seals with polished faces. All of our seals, from the blending of raw materials to the finished product, are made in-house by our specialized craftsmen

Materials

Our wear mechanical seals rings are made from the following materials:

We also offer various impregnations and treatments to further fit your application needs.

Customized Solutions

As St. Marys Carbon is one of the few companies to make each and every product from the initial mixing of the carbon grades to the time it is shipped to our customers, each of our seals can be custom-manufactured to your specific requirements. We will individually work with you to find the right grade and design for your seals to optimize sealing performance and extend your equipment’s uptime.

GradeDensity(lbs./ft.3)Flexural Strength (psi)Compressive Strength (psi)Coefficient of Thermal Expansion (u/°F)Temperature Limit Neutral (°F)Temperature Limit Oxidizing (°F)Scleroscope HardnessApplications
49S112.948,40023,0002.4950050075Mechanical Seals
275115.4410,00024,0002.6050050080Mechanical Seals
417115.5013,00033,0002.8050050095Mechanical Seals
219110.4510,00025,0002.54160070075Mechanical Seals
375118,5610,00025,0002.6050050080Mechanical Seals
181S112.3212,00030,0003.0650050095Mechanical Seals

For more information about our services, call us at 814.781.7333

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KEY ADVANTAGES OF ST. MARYS CARBON MECHANICAL SEALS:

Dry-Running / Oil-less

Dry-Running / Oil-less

Greatly reduces failure rates and allows for use in sanitary environments due to its self-lubricating properties.

High Temperature Stability

High Temperature Stability

Maintains high strength and runs effectively without failure at high temperatures.

High Thermal Conductivity

High Thermal Conductivity

Allows for heat exchange to prevent overheating.

Low Friction / Wear

Low Friction / Wear

Resists wear and reduces friction as it is chemically inert, oxidation-resistant and self-lubricating.

KEY END PRODUCTS

Our seals are used in a large variety of industries for an even broader range of applications. Remember that we custom design our products to fit your needs, so please contact us if you have a need outside of those below and we’ll work with you to find a solution.

  • Chemical Pumps
  • Fluid-Handling Pumps
  • Food-Handling Pumps
  • Fuel Pumps
  • Medical Pumps
  • Oil & Gas Pumps
  • Refrigeration Pumps
  • Vacuum Pumps

WE MAKE THE GRADE PRODUCTS CAN BE CUSTOMIZED TO FIT YOUR NEEDS! Learn More

KEY MARKETS:

You can find our carbon graphite seal rings used across a wide range of different markets, including:

  • Aerospace
  • Chemical
  • Fluid-Handling
  • Industrial
  • Medical
  • Mining
  • Power
  • Pharmaceutical