Allpa Rubber Propeller Shaft Seal for Water-Lubricated Inboard Shafts Ø25–50 mm

Name: Allpa Rubber Propeller Shaft Seal for Water-Lubricated Inboard Shafts Ø25–50 mm
SKU: ALP 463225

SKU: ALP 463225

ID 1416418

$ 125.11

1-2 weeks delivery time

Diameter, mm:

43
47
54
59.5
62
65

Shaft Diameter:

Allpa rubber propeller shaft seals for water-lubricated inboard marine propulsion systems, available for shaft diameters of 25, 30, 35, 40, 45 and 50 mm and stern tube connection diameters from 43 to 65 mm. The flexible rubber bellows assembly features double lip seals, a stainless steel hose clamp and silicone grease lubrication. Supplied with silicone grease and a mounting clip. Water inlet versions feature a Ø10 mm connection. Seal temperature range: -10°C to +80°C; outer bearing temperature range: -20°C to +140°C.

Description
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Allpa Rubber Propeller Shaft Seal for Water-Lubricated Inboard Shafts Ø25–50 mm

The Allpa Rubber Propeller Shaft Seal is designed for water-lubricated inboard marine propulsion installations. The seal combines a flexible rubber bellows with a propeller shaft bearing and double lip sealing arrangement, providing a shaft sealing solution for stern tube installations.

Available for propeller shaft diameters from 25 to 50 mm, the range includes six configurations with stern tube connection diameters from 43 to 65 mm. Each version is matched to a specific shaft and stern tube diameter.

The rubber sealing assembly is oil- and grease-resistant and is supplied with a stainless steel hose clamp, silicone grease tube and mounting clip. Versions with a water inlet allow connection to a water scoop through a Ø10 mm fitting.

Key Features

Water-lubricated shaft sealing: Designed for inboard marine propeller shaft installations.
Flexible rubber bellows: Connects the seal assembly to the stern tube.
Double lip seals: Sealing arrangement with silicone grease lubrication.
Stainless steel hose clamp: Included for fastening the rubber bellows.
Silicone grease: Supplied with a mounting clip.
Optional water inlet: Ø10 mm connection for water scoop installations.
Oil- and grease-resistant construction: Suitable for marine shaft sealing applications.
Available shaft diameters: 25, 30, 35, 40, 45 and 50 mm.
Available stern tube diameters: 43, 47, 54, 59.5, 62 and 65 mm.

Technical Specifications

Parameter	Specification
Brand	Allpa
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, 45, 50 mm
Stern Tube Connection Diameters	43, 47, 54, 59.5, 62, 65 mm
Water Inlet	Optional, Ø10 mm
Lubrication	Silicone Grease
Seal Temperature Range	-10°C to +80°C
Outer Bearing Temperature Range	-20°C to +140°C
Length L-1	102–129 mm, depending on model
Length L-2	38 mm
Hose Clamp Material	Stainless Steel
Available Versions	6

Available Models and Dimensions

Article Number	Shaft Ø (mm)	Stern Tube Ø (mm)	L-1 (mm)	L-2 (mm)
463225	25	43	102	38
463230	30	47	112	38
463235	35	54	121	38
463240	40	59.5	121	38
463245	45	62	121	38
463250	50	65	129	38

Sealing and Lubrication

The flexible rubber bellows incorporates a double lip sealing arrangement lubricated with silicone grease. The seal is supplied with a silicone grease tube and mounting clip.

A version with a Ø10 mm water inlet can be used where an additional water supply from a water scoop is required. The water inlet and separate grease supply support lubrication of the sealing arrangement.

Construction and Included Components

Flexible rubber propeller shaft seal assembly.
Double lip sealing arrangement.
Stainless steel hose clamp.
Silicone grease tube.
Mounting clip.

Temperature Resistance

Component	Temperature Range
Seals	-10°C to +80°C
Outer Bearing	-20°C to +140°C

Selection and Installation

Select the correct Allpa rubber propeller shaft seal according to the following dimensions:

Propeller Shaft Diameter: 25, 30, 35, 40, 45 or 50 mm.
Stern Tube Connection Diameter: 43, 47, 54, 59.5, 62 or 65 mm.
Installation Length L-1: 102, 112, 121 or 129 mm.
Connection Length L-2: 38 mm for all versions.
Water Supply: Verify whether the installation requires a Ø10 mm water inlet.

Before ordering, check both the propeller shaft diameter and stern tube outside diameter to ensure the correct sealing configuration.