DHTW/UHTW Pusher Seals
Flowserve’s DHTW and UHTW mechanical seals are the custom engineered seals with features reliable in applications that are high energy and heavy duty focused. Through years of industrial research and experience, Flowserve designed the DHTW and UHTW seals to reflect the pinnacle of Flowserve’s mechanical seal engineering expertise and detailed design.
Flowserve’s DHTW and UHTW seals are a solid platform with the ability to provide superior design flexibility to address a wide range of challenging applications ranging from boiler feed and circulation, oil field injection, and pipeline services. Through its extensive array of design features, the seals enables custom configured solutions to maximize equipment uptime and availability in critical services.
Features
- Unmatched performance and extended seal life derived from FEA-designed seal faces that boast zero net deflection from thermal, hydraulic, and dynamic forces.
- Superior high temperature, slow roll and hot standby operation enabled by high performance circulating features that delivers optimum cooling at all operating speeds.
- Reliable operating in high speed services achieved via precisely controlled seal face balanced ratio.
- Withstands torque from high viscosity fluids and high speeds with robust drive engagement.
- Extended equipment uptime with available secondary containment options.
Operating Parameters
| Pressures | up to 207 bar (3000 psi) |
| Temperatures | -40°C to 371°C (700°F) |
| Speed | up to 76 m/s (250 fps) |
| Shaft Sizes | 25.4 to 228.6 mm (1.000 to 9.000 inch) |
Materials of Construction
| Metal Components | Stainless Steel |
| Rotating Face | Silicon Carbide. Tungsten Carbide |
| Stationary Face | Carbon, Silicon Carbide |
| Gaskets | Fluoroelastomer, Perfluoroelastomer, EPDM or Nitrile |
