• APD302T / 302TSD
  • APD302T / 302TSD
  • APD302T / 302TSD

APD302T / 302TSD


☑ Dual Cartridge Seal
☑ DIN/ANSI Big Bore / Tapered Bore
☑ High Temperature
☑ High Pressure
☑ Highly Abrasive
☑ Very Viscous Fluids
☑ Light solids
☑ Isolated Springs
Model : APD302T/302TSD Dual Mechanical seal

The APD302T and 302TSD seals are designed, manufactured and tested according to API Standard 4th edition. While APD302T is the prototype, both seals have rugged construction and superior clogging resistance. Designed for harsh operating conditions, they are especially suited for high-pressure and high-temperature processes with crystallizing, highly abrasive or viscous media.

(1)APD302T:Standard design for medium / high abrasion or viscosity services.
(2)APD302TSD:Custom design for high abrasion or viscosity services.

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

  Catalog Download 

【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®

  • 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.
  • The APD 302TSD features circular screw threads on the shaft sleeve to expel solids away from the seal as they spin.
    • 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.