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Allpa EVO Rubber Propeller Shaft Seal with Water and Grease Inlets Ø25–40 mm
The Allpa EVO Rubber Propeller Shaft Seal is designed for water-lubricated inboard marine propulsion installations. It combines a flexible rubber bellows with a double lip sealing arrangement and separate connections for water supply and silicone grease lubrication.
The EVO series is available for propeller shaft diameters of 25, 30, 35 and 40 mm, with corresponding stern tube connection diameters of 43, 49, 55 and 59.5 mm. Each configuration is selected according to the propeller shaft and stern tube dimensions.
The seal includes a Ø10 mm water inlet for connection to a water scoop and a separate grease inlet for lubrication of the double lip seals. The flexible rubber assembly is oil- and grease-resistant.
Key Features
- Water-lubricated shaft sealing: Designed for inboard marine propulsion systems.
- Double lip seals: Sealing arrangement with silicone grease lubrication.
- Separate water inlet: Ø10 mm connection for water scoop installations.
- Separate grease inlet: Allows lubrication of the double lip seals.
- Flexible rubber bellows: Connects the shaft seal assembly to the stern tube.
- Stainless steel hose clamp: Included for installation.
- Silicone grease: Supplied in a tube with mounting clip.
- Oil- and grease-resistant construction: Suitable for marine shaft sealing applications.
- Available shaft diameters: 25, 30, 35 and 40 mm.
- Stern tube diameters: 43, 49, 55 and 59.5 mm.
Technical Specifications
Parameter Specification Brand Allpa Series EVO Product Type Rubber Propeller Shaft Seal Application Water-Lubricated Inboard Propeller Shaft Systems Construction Flexible Rubber Bellows Sealing Arrangement Double Lip Seals Available Shaft Diameters 25, 30, 35, 40 mm Stern Tube Connection Diameters 43, 49, 55, 59.5 mm Water Inlet Diameter 10 mm Grease Lubrication Separate Grease Inlet Seal Temperature Range -10°C to +80°C Outer Bearing Temperature Range -20°C to +140°C Length L-1 102–121 mm, depending on model Length L-2 38 mm Hose Clamp Material Stainless Steel Lubricant Silicone Grease Available Versions 4
Available Models and Dimensions
Article Number Shaft Ø (mm) Stern Tube Ø (mm) L-1 (mm) L-2 (mm) 463226 25 43 102 38 463231 30 49 112 38 463236 35 55 121 38 463241 40 59.5 121 38
Water and Grease Lubrication
The Allpa EVO shaft seal incorporates two separate lubrication connections:
- Water Inlet: Ø10 mm connection for supplying water from a water scoop.
- Grease Inlet: Separate connection for silicone grease lubrication of the double lip seals.
The independent water and grease connections provide the required lubrication arrangement for the shaft sealing assembly.
Construction and Included Components
- Flexible rubber shaft seal assembly with double lip seals.
- Integrated Ø10 mm water inlet.
- Separate grease inlet.
- Stainless steel hose clamp.
- Silicone grease tube.
- Mounting clip.
Temperature Resistance
Component Temperature Range Seals -10°C to +80°C Outer Bearings -20°C to +140°C
Selection and Installation
Select the correct Allpa EVO propeller shaft seal according to the propeller shaft diameter and stern tube connection diameter.
- Ø25 mm Shaft: Article 463226, for a 43 mm stern tube.
- Ø30 mm Shaft: Article 463231, for a 49 mm stern tube.
- Ø35 mm Shaft: Article 463236, for a 55 mm stern tube.
- Ø40 mm Shaft: Article 463241, for a 59.5 mm stern tube.
Before ordering, verify the shaft diameter, stern tube outside diameter, installation length and availability of a suitable water supply for the Ø10 mm inlet.
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