Dry gas seals are used to prevent gas leaks in a variety of industrial applications, especially in centrifugal compressors, pumps and other rotating equipment. Unlike traditional liquid seals, dry gas seals operate without any liquid lubrication.

The FBG^®120 utilizes patented inflective grooves technology, which generates hydrodynamic force during operation, causing the face to separate from the seat and creating a rigid gas film for effective sealing. Additionally, this technology significantly reduces friction and wear, thereby enhancing sealing efficiency and lifespan.

As an externally-installed single gas seal, it can utilize atmospheric air to create a dynamic lifting gas film under low pressure or zero pressure, requiring no external source of gas or support system accessories. The cartridge-type design facilitates easy installation and reduces maintenance costs, while ensuring safety, reliability, and an eco-friendly sealing solution.

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【Operating Capabilities】

• Temperature： -20 ~ 230 ℃ (-40 ~ 446 ℉)
• Pressure： 0~0.5 kg/cm²G
• Surface Speed：600~1000 fpm
  
  

• Stationary Ring：Silicon Carbide / Tungsten Carbide
• Rotary Ring：Carbon Graphite
• Metal Parts：SUS304 / SUS316 / SUS316L / 316Ti / Hastelloy C / Titanium / Duplex / Monel^®
• Elastomeric O-rings：FFKM : Chemraz^® / Kalrez^® / SceniRAZ^® ; Viton / NBR / Aflas(HTCR) / EPDM / PFT / Hiflour
• Gland Gasket：Glass-Filled PTFE / Non- Asbestos / O-Ring
• Springs：SUS316 / Hastelloy C / Inconel^®

• Convenient to assemble, disassemble, and install.
• Seal uses spiral groove technology to create a gas film principle between the seal faces. During operation, the inert gas penetrates throught the spiral grooves to generate a lift, and establish a sealing gap. 
• Non-contacting Seal Faces. Required power consumption is just 5%~12% in compararison to wet seal. Minimized wearable materials, support equipments and maintence costs. 
• Below normal pressure, utilized rotation speed in influenzing atomospheric pressure as  inert gas to establish sealing gap.   
• Non-complicated assesory system, convinient to restore, highly dependable.
• In normal operation, dry gas seal may continously run for years without the need to stop for maintenace.

• Designed for various rotating equipment, such as pumps, steam turbines, mixers, agitators, blowers, windmills, & other rotating equipment.