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Standard Cartridge Seals – ISC2-682

About this product

The ISC2-682 Series is a family of balanced pusher and metal bellows seals designed to fully comply with the design and qualification requirements of API 682. Platform flexibility allows application in a range of services throughout refineries, petrochemical plants and other industries where the API 682 specification is invoked. ISC2-682 seals are fully compliant with API 682, Type A and Type B requirements.

Features and Benefits

  • Qualified for Category 1 ASME B73.1 and Category 2 API 610 pumps per API 682 design and test criteria.
  • Multiple coil springs in Type A pusher seals are non-wetted and non-rotating for excellent clogging resistance under imperfect equipment alignment conditions.
  • Edge-welded metal bellows in Type B seals rotate with the shaft for a self-cleaning effect that helps prevent accumulation of debris.
  • Thermal management technology enhances seal face heat transfer, reduces seal face temperatures and increases tolerance to dry running events.
  • Hydraulically retained and double balanced seal faces in all versions allow continued operation during unintended reverse pressurization.
  • Circulating device integrated into the dual seal cartridge circulates barrier fluid to keep the seal faces cool. A circulating device is also available on single
    seals for fluids over 75°C (167°F).
  • Available multiport flush distributes flush fluid evenly around the seal faces to eliminate temperature gradients and improve seal face flatness.
  • Gland throttle bushings are available in fixed, floating, and segmented varieties to provide secondary
    containment in single seal arrangements.

Specifications

  • Metal Parts: 
    • 316 Stainless Steel
    • Alloy C-276
  • Mating Ring:
    • Direct Sintered Silicon
    • Carbide
  • Primary Ring: 
    • Resin Grade Carbon
    • Direct Sintered Silicon Carbide
  • Metal Bellows:
    • Alloy C-276
  • Elastomers:
    • Fluoroelastomer
    • Perfluoroelastomer
    • EPDM
    • TFE-Propylene
  • Springs:
    • Alloy C-276
  • Pressure:
    • up to 21 bar (300 psi)
    • up to 14 bar (200 psi)
  • Temperature:
    • -40 to 204°C
  • Speed:
    • up to 23 m/s (75 fps)
  • Specific Gravity:
    • > 0.6
  • Shaft Size:
    • 25.40 to 203.2 mm (1.000 to 8.000″) – Pusher
    • 25.40 to 95.25 mm (1.000 to 3.750″) – Bellows

Configurations

  • ISC2-682PX – Single Pusher 
  • ISC2-682PP – Dual Pusher
  • ISC2-682BB – Dual Bellows
  • ISC2-682BX – Single Bellows
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