• 302TSG
  • 302TSG
  • 302TSG



☑ Dual Cartridge Seal
☑ Standard DIN/ANSI
☑ High Temperature
☑ High Pressure
☑ Highly Abrasive
☑ Very Viscous Fluids
☑ Light solids
☑ Isolated Springs
Model : APD 302TSG Dual Mechanical Seal

※ More Customized Sealing Solution. Please feel free to contact us.

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【Operating Capabilities】
  • Temperature: -40 ~ 310°C (-40 ~ 583 °F )
  • Pressure: Up to 427 psig (30 kg/cm2G)
  • Surface Speed: Up to 5000 fpm (25 m/s)

【Standard Materials】
  • Stationary Ring:Silicon Carbide / Tungsten Carbide
  • Rotary Ring:Silicon Carbide / Tungsten Carbide / Carbon Graphite
  • Metal Parts:316 SS / 304 SS / 316L SS / 316Ti SS / Duplex Stainless / Alloy C-276 / Titanium / Monel®
  • Elastomeric O-rings:FKM / AFLAS / NBR / EPDM / TV / FFKM (SceniRAZTM / Chemraz® / Kalrez®)
  • Gland Gasket:Glass-Filled PTFE / Non- Asbestos / Spiral-Wound
  • Springs:316 SS / Alloy C-276 / Inconel®
※ Custom designs are available to cover the specific needs of customers.  Please feel free to contact us. 
  • The patented cartridge design features innovative dropproof springs, thereby speeding installation and maintenance.
  • High duty transmission construction ensures consistent performance.
  • The springs are divorced from the process media, and thus free from cracking and clogging problems due to stress corrosion and solids, respectively.
  • Our jumbo coil springs have better wear resistance than many other brands.
  • Designed to eliminate the risk of clogging caused by fluids with medium solids or medium viscosities.
  • Balanced design for both pressure directions.
  • Self-aligning compensates for shaft runout up to ±0.5 mm, increasing operational reliability.
  • Multi-stage heat exchanging design, including a cylindrical cooling jacket, delivers bidirectional cooling flows at high flow rates, greatly extending MTBF (Mean Time Between Failures) because of less heat.
  • Capable of near-zero VOC emissions by using a barrier fluid maintained at a proper pressure.
  • Flexible piping plans with a barrier/buffer fluid pressurized or unpressurized, depending on the application.
  • Monolithic sealing faces with precise dimensions and excellent resistance to wear.
  • Designed for heavy industry pumps pumping very viscous media, such as asphalt or pitch transfer pumps under high temperature towers, large heavy oil transfer pumps and refining process pumps.
  • Prevent hazardous emissions of acidic, caustic, corrosive, volatile and toxic media.
  • Ideal for high viscosity applications, such as emulsions, latex and rubber.
  • Reliable sealing for high temperature, high or varying pressure processes.
  • Engineered to cope with process fluids prone to crystallize, or with a high percentage of abrasive solids or powder.
  • Withstand dry running involved with frequent starts and stops.
  • Used for dry-running applications in specialty equipment, such as air transportation blowers.
  • Ability to tolerate short intermittent dry-running in batch charging and discharging equipment.
  • Widely used in the refining, petrochemical, rubber, chemical, food and beverage, pharmaceutical, pipeline transportation, renewable energy, and power generation industries.
  • The patented cartridge design features innovative dropproof springs, thereby speeding installation and maintenance.