Circumferential Gas Seal
The Flowserve CircPac HP Circumferential Gas Seal is an engineered segmented seal designed for high-pressure gas compressors. With an advanced pressure-balanced ring design and hydrodynamic surface features, this seal delivers low gas consumption, superior performance, and extended service life across various demanding applications.
Unlike conventional circumferential seals, the CircPac HP supports customizable ring configurations to meet specific industry requirements, ensuring optimal sealing performance with minimal leakage.
Circpac HP Circumferential Gas Seal Application
Advanced Sealing Technology
- Balanced Floating Carbon Ring Design – Handles high-pressure environments efficiently.
- Deep Hydropad Groove – Minimizes contact loads and wear, extending seal life.
- Narrow Ring Clearance – Provides significantly lower leakage than traditional fixed-clearance seals.
Superior Performance & Reliability
- Precision Joint Technology – Reduces bypass leakage and resists fouling from oil, solids, and process contaminants.
- Simplified Control System – Controlled by constant pressure instead of constant flow, reducing complexity.
- Cartridge Seal Assembly – One-piece design reduces downtime and eliminates delicate part handling.
Cost-Efficient & Sustainable
- Zero Emissions Capability – Various barrier gases prevent contamination while maintaining a leak-free operation.
- Energy Savings – Lower gas consumption compared to traditional liquid and clearance seals.
- Minimal Maintenance – Long service life with reduced need for frequent replacements.
Related Industries
The CircPac HP circumferential gas seal is widely used in high-pressure industrial applications where reliable sealing and minimal gas leakage are critical.
- Oil & Gas Processing
- Natural Gas Liquids (NGL)
- Liquefied Natural Gas (LNG)
- Crude Handling & Treatment
- Gas-to-Liquids Conversion
- Chemical & Refining
- Alkylation
- Catalytic Cracking
- Hydrocracking
- Distillation
- Delayed Coking
- Hydrotreating
- Pipeline & Energy
- Gas Treatment Facilities
- Products Pipeline Systems
Technical Specifications
| Specification | Details |
|---|
| Operating Pressure | Vacuum to 150 psi (10 bar) |
| Operating Temperature | -40°F to 350°F (-40°C to 177°C) |
| Speed Capability | Up to 300 fps (91 m/s) |
| Size Range | 1.000″ to 11.000″ (25 mm to 280 mm) |
| Ring Material | Special grade carbon |
| Housing Material | Stainless Steel or NACE-compliant alloys |
| Sleeve Material | NACE-compliant with hard coating |
| Elastomers | Fluoroelastomer, Perfluoroelastomer |
| Control System | Constant pressure instead of constant flow |
Sample Ring Configurations
| Single Ring – Standard sealing for moderate applications. |  |
Tandem Ring – Provides additional safety and extended service life. |  |
Double Ring – Enhanced sealing with lower gas consumption. |  |
Double with Purge & Vent – Improved pressure control and leakage management. |  |
Dual Double with Vent – Ultimate sealing for high-pressure applications. |  |
- Flowserve CicrPac HP Compressors Seals and Systems Brochure
- Flowserve Seal Product Portfolio
- Flowserve Seal Management (Fluid Management Challenge)
Ensure low gas leakage and superior performance with the Flowserve CircPac HP Circumferential Gas Seal. Contact our experts today to find the perfect sealing solution for your high-pressure compressor applications.
