CARBON GRAPHITE SEALS & RINGS MANUFACTURING
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.
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.
ENVIRONMENT, OPERATING CONDITIONS & APPLICATIONS
DRY-RUNNING / OIL-LESS
Greatly reduces failure rates and allows for use in sanitary environments due to its self-lubricating properties.
HIGH TEMPERATURE STABILITY
Maintains high strength and runs effectively without failure at high temperatures.
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
HOW CAN WE HELP YOU ?
CARBON GRAPHITE SEALS & RINGS DETAILS
Working Temperature
- Minimum
- Runs in cryogenic temperatures (no true minimum value)
- Maximum
- Carbon/Graphite up to 700 F
- Electrographite up to 900 F
- Electrographite with inorganic additives up to 1150 F
- Other oxidation inhibitors (impregnants) up to 1200 F
- In inert/neutral environments
- Carbon/Graphite up to 1600 F
- Electrographite up to 5000 F
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
Average Oxidation & Chemical Resistance
- Carbon grades are resistant to most chemicals
Spring Pressure Range
- Application dependent
Face Pressure
- Application dependent
CARBON GRAPHITE GRADE
| 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 |
How carbon graphite will make your products & parts superior
Mechanical Seals & Rings Data Sheet
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