CARBON GRAPHITE TURBINE AND COMPRESSOR RINGS MANUFACTURING
St. Marys Carbon manufactures HALOTM turbine & compressor rings from superior carbon graphite grades, including carbon graphite, electrographite and resin-bonded graphite for a variety of applications. St.Marys Carbon is widely recognized in this industry and is the preferred supplier for many major manufacturers.
All of our turbine & compressor rings, from the blending of raw materials to the finished product, are made inhouse by our specialized craftsmen.
Our HALOTM rings can be custom-manufactured to your specific requirements. We develop our own proprietary grades and manufacture each product in-house, so we will work closely with you to create a product that is right for you.
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 HALO rings are used in a wide range of end products as listed below. 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.
- Gas Turbines
- Steam Turbines
- Hydro-Electric Power
- Wind Turbines
- Centrifugal Compressors
- Axial Compressors
- Reciprocating Compressors
- Blowers/Fans
HOW CAN WE HELP YOU ?
CARBON GRAPHITE TURBINE AND COMPRESSOR 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 HALO™ turbine and compressor rings are used across a wide range of different markets, including:
- Aerospace
- Chemical
- Industrial
- Oil & Gas
- Power Generation
- Renewable Energy
- Steel
Product Material
Average Oxidation & Chemical Resistance
- Carbon grades are resistant to most chemicals
Spring Pressure Range
- Application dependent
CARBON GRAPHITE GRADE
| Grade | Density(lbs./ft.3) | Flexural Strength (psi) | Compressive Strength (psi) | Coefficient of Thermal Expansion (µ/°F) | Temperature Limit Neutral (°F) | Temperature Limit Oxidizing (°F) | Scleroscope Hardness | Applications |
|---|---|---|---|---|---|---|---|---|
| 49 | 99.84 | 4,000 | 9,800 | 1.91 | 1,500 | 650 | 45 | Turbine & Comp. Rings |
| 49C | 112.32 | 7,000 | 22,000 | 2.30 | 500 | 500 | 55 | Turbine & Comp. Rings |
| 75 | 106.08 | 8,100 | 21,500 | 2.80 | 3,000 | 750 | 80 | Turbine & Comp. Rings |
| 117 | 102.96 | 3,600 | 9,000 | 2.01 | 5,000 | 850 | 40 | Turbine & Comp. Rings |
| 35 | 109.20 | 7,000 | 17,500 | 2.40 | 5,000 | 850 | 60 | Turbine & Comp. Rings |
| 35AH | 109.20 | 7,500 | 17,000 | 2.40 | 1,500 | 1,150 | 65 | Turbine & Comp. Rings |
| 219 | 110.45 | 10,000 | 25,000 | 2.54 | 1,600 | 700 | 75 | Turbine & Comp. Rings |
| 185 | 111.70 | 7,700 | 19,000 | 2.20 | 500 | 500 | 72 | Turbine & Comp. Rings |
How carbon graphite will make your products & parts superior
Turbine and Compressor Rings Data Sheet
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