Type 8610

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

Type 8610

Features mechanical seal type 8610

  • 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 8610

  • Process pumps
  • Driven machinery
  • Other rotating equipment

About Mechanical seal type 8610

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 8610

  • 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

Material mechanical seal type 8610

  • Face/Primary Ring: Carbon
  • Retainer/Disc/Drive Band/ Spring Holder: 18-8 Stainless Steel
  • Bellows: Buna-N
  • Springs: 18-8 Stainless Steel

Operating range mechanical seal type 8610

  • Standard Materials

    Seal faces

    Cranite vs. SiC/WC

    -50 to 300 °C

    Carbon vs. SiC

    -50 to 250 °CO-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 8610

  • 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