The Sepco® VSR is a single, external, cartridge-mounted, rotary seal designed for installations where shaft deflection exceeds the limits allowed by off-the-shelf cartridge seals. Excessive radial clearances designed in the seal make it ideal for vertical turbine pumps in power plants, pulp & paper mills, municipalities, and applications in relatively clean, lubricating fluids.
Hydraulically Balanced
Hydraulic balancing is achieved internally allowing operation in higher pressures without the need for special stepped sleeves and shafts. The balance feature also reduces hydraulic loads allowing for cooler operation and extended reliability.
Versatile Gland
The gland is vented to eliminate air entrapment and improve cooling efficiency for longer seal life. Machined glands offer superior corrosion resistance and strength and can be modified to fit the equipment saving equipment modification cost.
Metal Parts:
- Standard metal parts and set screws: 316 SS
- Standard Springs and drive pins: Hastelloy® C
Face Materials:
- Standard: High quality chemical grade carbon-graphite, solid
- nickel bound tungsten carbide, silicon carbide, and high purity ceramic
- Optional: 17-4PH stainless steel.
O-ring Materials:
- Standard: Viton®, EPR and Aflas™
Operating Capabilities:
- Pressure: To 300 psig (21 bar g)
- Temperature: 32° to 400°F (0° to 205°C)
- Speeds: 5000 fpm (25 m/s)