FW-SAF Mechanical Seal for Paper-making Equipment and Pressure Screens (for paper pulp agitation)

Structural Features

Double-end, multiple springs, with spring protector, balanced, independent direction of rotation, spring standing mechanical seal. The component is cartridge seal with easy installation. The springs are not touching the sealed mediums so that there will be no jam caused by the high viscosity and crystallization active content. This makes sure the flexibility of the compensation ring and as a result, it lasts the lifetime of the whole component. Multi spring structure makes the load on the sealing faces balanced. The seal needs to work with sealing water, which has the pressure of 0.1 – 0.3 MPa and flow rate of 3 – 8 L/min.

Industrial Standards

Specific Customization

Scopes of Application

mainly used in chemical engineering, pulp production, pulp drying, pulp screening, and sewage treatment. Designed for pressure screens and other filters. This component can work as an alternative to ANDRITZ Johncrane-Safematic seal support system.

Operation Parameters

• Pressure: 0 ~ 1.5 MPa or less
• Temperature: – 40 ~ 180 ºC
• Linear Speed: 20 m/s or less
• Pressure of Cooling Water: 1.25 times higher than the subject’s operating pressure
• Solid Capacity: 15% or less

Materials

• Rotary Ring Face
• Medium Side: SiC/TC
• Sealing Water Side: SiC/TC
• Stationary Ring Face
• Medium Side: SiC/TC
• Sealing Water Side: Carbon/SiC/TC
• Elastomers: Viton/EPDM/PTFE/Aflas
• Springs: SS316/HC276
• Metal Parts: SS304/SS316/SS316L/2507/2205

Mediums

oil, water, sulphite lyes, paper pulp, acid, alkali and other solvents.

Customization