Mechanical Seals and Seal Support Systems
Pusher Seals - hsh
About this product
HSH seals are built for extended reliability in high pressure, high speed and highly viscous services such as mainline crude oil pipeline pumps. HSH seals are balanced, flexible stator cartridge seals with drive mechanisms and seal face geometries engineered for high torque loads and long-term performance. The HSH seal is fully compliant with API 682 Type A requirements.
Features and Benefits
- Extended service life via high torque-capable anti-rotation lugs that minimize distortion and wear
- Greater efficiency from standard distribution ring connected to the seal’s flush port, which improves cooling efficiency by injecting flush flow 360° around seal faces
- Reliable high speed operation and improved tolerance of misalignment enabled by flexible stator design with Alloy C-276 spring
- Decreased inventory costs and increased design flexibility owing to parts interchangeability between single and dual seal arrangements
Specifications
- Metal components:
- 316 Stainless Steel
- Alloy C-276
- 17-4 PH Stainless Steel
- Rotating Face:
- Tingsten Carbide
- Silicon Carbide
- Diamond Coating
- Stationary Face:
- Silicon Carbide
- Carbon
- Diamond Coating
- Gaskets:
- Fluoroelastomer
- Perfluoroelastomer
- Springs:
- Alloy C-276
- Bushing:
- Carbon
- Shaft Sizes:
- 25.4 to 156 mm (1.000 to 6.125″)
- Dynamic Pressure:
- up to 103.4 bar (1500 psi)
- Static Pressure:
- up to 206.8 bar (3000 psi)
- Temperature:
- -40 to 260°C
- Specific gravity:
- 0.3 and higher
- Speed:
- up to 46 m/s (150 fps)
Configurations
- Single seal
- HSH
- Dual seals
- HSH/HSH – unpressurized dual-liquid buffer seal face-to-backconfiguration
- HSH/GSL – unpressurized dual seal with dry running containment seal
- HSH/HSH – dual-liquid barrier seal face-to-face configuration
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