Volvo Penta propeller shaft seal set | shaft seal spare parts

Propeller shaft seals / Stuffy box

Propeller shaft seals for Volvo Penta ensure tight transitions between the propeller shaft and housing in the drive and cooling circuit. OEM-accurate seal sets according to reference number, engine type and drive series prevent water and lubricant leaks, reduce corrosion risks and ensure long-term function. Selection by OEM number ensures correct sealing, material quality and reliable performance in marine applications.

Function & importance of the seal set on the propeller shaft

The seal kit for the propeller shaft is a crucial component of the sealing system between the drive and the outboard/submersible hull. It prevents water from penetrating along the rotating shaft into the interior of the housing or bearing and at the same time protects against the loss of lubricants in the bearing area. Correct sealing is essential to prevent corrosion, bearing wear and expensive motor damage.

Components of the seal kit - typical components

A complete propeller shaft seal kit can include the following parts:

Oil seals / shaft seals - Primary sealing surfaces against water ingress
O-rings & elastomer seals - for seal seats and transitions
Shaft seals with back-up rings - to reduce friction and wear
Bearing seals / shield rings - protection of the bearing surfaces
Sealing washers & washers - for correct mounting arrangement

The exact composition depends on the respective Volvo Penta drive system.

OEM reference numbers - reliable identification

The selection of a suitable seal kit should be made using the OEM reference number. Volvo Penta uses specific references to define seal type, dimensions and material requirements. A comparison of the OEM number from the service manual, exploded view drawing or old part ensures

correct fit
exact sealing surface dimensions
suitable material selection
Optimized service life

Without OEM alignment, the risk of leaks, premature wear or functional problems increases.

Accuracy of fit: engine type, drive & year of manufacture

Seal kits vary depending on:

Drive series (e.g. Z-drive, Sail Drive)
Engine type (diesel vs. gasoline, displacement)
Year of manufacture & serial number
Shaft dimensions & speed profile

Only OEM-compliant seal kits cover these differentiated requirements and ensure that sealing surfaces, elastomer hardness and tolerances meet the specifications.