Wärtsilä Electric Pod & Thruster Seals

The Wärtsilä Airguard, Oceanguard and Sternguard ranges are adapted to these applications.

In addition to drive type, the operating environment will influence the choice of sealing solution. These include abrasives, shaft movements and serviceability requirements.

Following the acquisitions of John Crane - Lips, Japan Marine Technologies and Cedervall Businesses as well as the acquisitions of the brand names DSS - Deep Sea Seals, Lips and JMT - Japan Marine Technologies by Wärtsilä, the products are renamed respectively:

  • DSS Oceanguard AC  -> Wärtsilä Oceanguard OFS3H-P
  • JMT Sternguard MK2 and 4BL -> Wärtsilä Sternguard OLS3-P and OLS4-P
  • JMT Airguard 3AS and 4AS -> Wärtsilä Airguard OLS3A-P and OLS4A-P
  • Cedervall SQT -> Wärtsilä Sternguard OFS1H-N-C

    Standard

    ELECTRIC PODS & THRUSTERS, OUTBOARD STANDARD LIP TYPE SEALS

    Wärtsilä Sternguard - OLS3-P, OLS4-P & OFS1H-N-C

    The Wärtsilä Sternguard range has the widest selection of standard oil lubricated lip, OLS3-P & OLS4-P, and face type sealing solutions, OFS1H-N-C.

    Shaft sizes ø80to ø1172 mm
    Serviceability Partially split and fully split options
    Internal lubricant Oil
    Max, draft pressure 2.0 bar for OLS3-P & OLS4-P
    2.5 bar for OFS1H-N-C
    Optional extras In water survey wear down gauge, net protection ring, spacer ring, zinc anodes, tungsten carbide coating for the liner, adaptable interfacing, Inner Rope Guard for added protection
    Wärtsilä Electric Pod & Thruster Seals - OLS3, OLS4-P
    Anti-Pollution

    THRUSTERS, OUTBOARD ANTI-POLLUTION LIP TYPE SEALS

    Wärtsilä Airguard, Thruster Seals - OLS3A-P & OLS4A-P

    The Wärtsilä Airguard range, OLS3A-P & OLS4A-P, is an oil lubricated outboard lip type sealing solution. The lip seals are pressurized with an air system to reduce the stress and wear, via controlled pressure differentials across the lip chambers.

    The Wärtsilä Airguard range contains an automatic air pressure control seal systems with air control unit, drain collection unit, oil tank and pump.

    Shaft sizes ø286 to ø1172 mm
    Serviceability Partially split and fully split options
    Internal lubricant Oil and air
    Max, draft pressure 1.85 bar
    Optional extras In water survey wear down gauge, net protection ring, spacer ring, zinc anodes, tungsten coating for the liner, adaptable interfacing

    Shaft sizes

    ø286 to ø1172 mm

    Serviceability

    Partially split and fully split options

    Internal lubricant

    Oil and air

    Max, draft pressure

    1.85 bar

    Optional extras

    In water survey wear down gauge, net protection ring, spacer ring, zinc anodes, tungsten coating for the liner, adaptable interfacing

     
    Wärtsilä Electric Pod & Thruster Seals - OLS3A, OLS4A-P
    Abrasion Resistant

    ELECTRIC PODS & THRUSTERS, OUTBOARD ABRASION RESISTANT & ANTI-POLLUTION FACE TYPE SEALS

    Wärtsilä Oceanguard - OFS3H-P

    The Wärtsilä Oceanguard, OFS3H-P, is an oil lubricated outboard face type seal and offers anti-pollution and abrasion resistance capabilities. The Wärtsilä Oceanguard product range uses a unique design with a face type seal in the sea water and lip seals to operate in the stem tube oil.

    The standard seal, OFS3H-P, contains a void space between the water and oil interfaces to provide a separation that enables monitor and draining. This prevents any contamination of the oil system with sea water and vice versa.

    In certain thruster applications pressure compensation is included to comply with pressure pulsing through increased shaft movements.

    Shaft sizes ø400 to ø760 mm (Electric pods)
    ø125 to ø1000 mm (Thrusters)
    Serviceability Partially split
    Internal lubricant Oil
    Max, draft pressure 1.0 bar
    Optional extras Bearing wear down gauge, rope protection assembly, deeper draft
    Wärtsilä Electric Pod & Thruster Seals - OFS3H-P

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