Wärtsilä Enviroguard MB and M4

Wärtsilä Enviroguard MB (formerly Wärtsilä Iceguard) is a closed water lubricated seal for inboard and outboard applications, designed specifically for icebreakers, where shock and high shaft movement are encountered.

Wärtsilä Enviroguard M4 (formerly Wärtsilä Iceguard) inboard seal is a closed water lubricated “omega” bellows, face seal assembly. The Wärtsilä Enviroguard M4 outboard seal is a closed water lubricated stern tube seal designed specifically for icebreakers experiencing high shaft movement.

 

    Wärtsilä Enviroguard MB inboard

    Wärtsilä Enviroguard MB is an inboard, closed water lubricated “omega” bellows, face type seal assembly, designed specifically to meet icebreaker applications where shock and high shaft movement capabilities are experienced. The seal can also be supplied as standard with partially split wearing components, to allow shaft in-situ replacement of wearing components.

    • Shaft diameter: Ø320mm to Ø1140mm
    • Axial movement: 43mm AFT / 26mm FWD
    • Radial movement: up to 19.05mm
    • Service pressure: 1.3bar
    • Operating temperature: -5ºC to 40ºC
     
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    Wärtsilä Enviroguard M4 outboard

    Wärtsilä Enviroguard M4 is an outboard, closed water lubricated stern tube system designed specifically for icebreaker applications that experience high shaft movement. The seal can also be supplied with partially split wearing components as standard, to allow shaft in-situ replacement of wearing parts.

    • Shaft diameter: Ø320mm to Ø1140mm
    • Axial movement: 43mm AFT
    • Radial movement: up to 19.05mm
    • Service pressure: 1.3bar
    • Operating temperature: -5ºC to 40ºC
     
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