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
Our wear mechanical seals rings are made from the following materials:
We also offer various impregnations and treatments to further fit your application needs.
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.
| Grade | Density(lbs./ft.3) | Flexural Strength (psi) | Compressive Strength (psi) | Coefficient of Thermal Expansion (u/°F) | Temperature Limit Neutral (°F) | Temperature Limit Oxidizing (°F) | Scleroscope Hardness | Applications |
|---|---|---|---|---|---|---|---|---|
| 49S | 112.94 | 8,400 | 23,000 | 2.49 | 500 | 500 | 75 | Mechanical Seals |
| 275 | 115.44 | 10,000 | 24,000 | 2.60 | 500 | 500 | 80 | Mechanical Seals |
| 417 | 115.50 | 13,000 | 33,000 | 2.80 | 500 | 500 | 95 | Mechanical Seals |
| 219 | 110.45 | 10,000 | 25,000 | 2.54 | 1600 | 700 | 75 | Mechanical Seals |
| 375 | 118,56 | 10,000 | 25,000 | 2.60 | 500 | 500 | 80 | Mechanical Seals |
| 181S | 112.32 | 12,000 | 30,000 | 3.06 | 500 | 500 | 95 | Mechanical Seals |
For more information about our services, call us at 814.781.7333
Greatly reduces failure rates and allows for use in sanitary environments due to its self-lubricating properties.
Maintains high strength and runs effectively without failure at high temperatures.
Resists wear and reduces friction as it is chemically inert, oxidation-resistant and self-lubricating.
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.
You can find our carbon graphite seal rings used across a wide range of different markets, including: