seal Type 8620 John

O-ring Pusher seals | Heavy-duty Cartridge Seal for Boiler Feed Circuit Applications

seal Type 8620 John

Features mechanical seal Type 8620

  • California Residents: PROPOSITION 65 WARNING
  • Silicon carbide mating ring for high face stability and efficient heat dissipation
  • Cranite primary ring for face stability and resistance to abrasion
  • Optional ACR (Armoured Composite Ring) for high strength in reverse pressure operation
  • John Crane LaserFace® technology for increased fluid film stiffness and reduced heat generation under high loads
  • ESR (Elastomer Support Ring) isolates seal faces from component induced distortions and minimise friction
  • Stationary springs are unaffected by centrifugal forces for high speed operation
  • Polymer Support Rings for excellent process compatibility and prevention of hang-up
  • Multi-point injection for effective cooling and minimises asymmetric face distortions

Recommended Applications Type 8620

  • Process pumps
  • Driven machinery
  • Other rotating equipment

About Mechanical seal Type 8620

The seal is suited to a whole host of offshore, refinery and process industry duties. Its robust construction and proven heritage make it ideal for remote pipeline installations.

Design Features mechanical seal Type 8620

  • Available in single, double, tandem, dry tandem and pressurized tandem seal designs
  • Advanced composite face materials
  • FEA optimized seal faces, with LaserFaceTM Technology as standard on double pressurized seals
  •  Unique carbon-fiber reinforcement option (ACR) for high static reverse pressure capability
  •  Hang-up resistant polymer secondary seals
    ESR seal face support, used to achieve stable face presentation

Operating range mechanical seal Type 8620

  • Standard Materials
    Seal faces
    Cranite vs. SiC/WC
    -50 to 300 °C
    Carbon vs. SiC
    -50 to 250 °C
    O-rings/secondary seals
    -25 to 200 °C (Hydrocarbon)
  • Pressure Limits
    Vacuum to 200 bar(g)
  • Speed Limits
  • Size Range
    41mm to 206mm

Product Description Type 8620

  • The Type 8600 High Duty Seal range, available in single and dual arrangements, is designed for the highest pressures and speeds.
  • Ideally suited for offshore, pipeline and injection duties
  • Stationary, multi-spring design ensures optimum operation across the speed range
  • Complies with API 610 and can be supplied to other international standards such as NACE MR-01-075