SKU:
FNI 2728525
ID
1415016
$ 67.36
1-2 weeks delivery time
Shaft Diameter:
- 25
- 30
- 35
- 40
- 45
- 50
STUFFY BOX EVO Rubber Propeller Shaft Seal is a compact marine shaft sealing system designed to replace traditional gland packing in metric propeller shaft installations. The EVO version features a hose connector for water lubrication and a separate greasing port with a brass plug, providing both water and grease lubrication connections. Available for shaft diameters from 25 to 50 mm, the six configurations have external diameters from 43 to 70 mm and overall lengths from 105 to 120 mm. Each kit includes an EVO rubber seal, brass hose connector, brass grease plug, special silicone grease tube with nozzle, stainless steel clamp, plastic protection ring and assembly instructions. A minimum support length of 38 mm is specified, with greasing recommended every 200 operating hours and replacement after four years or 500 operating hours.
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STUFFY BOX EVO Rubber Propeller Shaft Seal with Water Lubrication Ø25–50 mm
The STUFFY BOX EVO Rubber Propeller Shaft Seal is designed for sealing metric propeller shafts in marine propulsion installations. It replaces traditional braided gland packing with a compact rubber sealing system featuring connections for water lubrication and grease maintenance.
The EVO range includes six configurations for propeller shaft diameters from 25 to 50 mm. Each version combines a defined shaft diameter, external mounting diameter and overall length.
EVO Version – Water and Grease Lubrication Connections
The EVO version features two separate connections:
- Water Lubrication Connection: A brass hose connector for connection to the water lubrication system.
- Greasing Port: A separate opening fitted with a brass plug for periodic application of grease.
This arrangement distinguishes the EVO version from the standard STUFFY BOX Normal seal, which uses a grease hole without a hose connection.
Alternative to Traditional Gland Packing
The STUFFY BOX EVO rubber seal is designed to replace conventional braided gland packing in propeller shaft assemblies.
Its compact construction allows installation in shaft arrangements where available space is limited.
Rubber Sealing Body
The sealing body is manufactured from rubber and is designed for installation on metric propeller shafts.
The rubber body incorporates the connections required for water lubrication and grease application.
Installation Requirements
The supplied product specifications indicate a minimum support length of 38 mm for installation.
The external diameter and overall seal length depend on the selected shaft size. These dimensions should be checked against the existing stern tube and available mounting space.
Maintenance Recommendations
The manufacturer provides the following maintenance recommendations:
- Grease Application: Every 200 operating hours.
- Seal Replacement: After 4 years or 500 operating hours.
Complete EVO Installation Kit
Each STUFFY BOX EVO kit includes:
- EVO rubber propeller shaft seal.
- Brass hose connector for water lubrication.
- Brass plug for the greasing port.
- Tube of special silicone grease with nozzle.
- Stainless steel clamp.
- Plastic protection ring.
- Assembly instructions.
Available Models and Dimensions
The following table lists the six EVO configurations according to the manufacturer's technical catalogue. All dimensions are in millimetres.
FNI Article Shaft Ø A (mm) External Ø B (mm) Overall Length L (mm) 2728525 25 43 105 2728530 30 49 111 2728535 35 55 119 2728540 40 60 119 2728545 45 65 117.5 2728550 50 70 120
Product References
FNI Article Item Reference EAN 2728525 14STR25E 8057741260257 2728530 14STR30E 8057741260264 2728535 14STR35E 8057741260271 2728540 14STR40E 8057741260288 2728545 14STR45E 8057741260295 2728550 14STR50E 8057741260301
Key Features
- Product Series: STUFFY BOX.
- Version: EVO.
- Product Type: Rubber Propeller Shaft Seal.
- Application: Metric Marine Propeller Shafts.
- Sealing Material: Rubber.
- Water Lubrication: Brass Hose Connector.
- Greasing: Separate Port with Brass Plug.
- Shaft Diameter Range: 25–50 mm.
- External Diameter Range: 43–70 mm.
- Overall Length Range: 105–120 mm.
- Available Configurations: 6.
Technical Specifications
Product Type Marine Propeller Shaft Seal Series STUFFY BOX Version EVO Material Rubber Water Lubrication Connection Brass Hose Connector Grease Connection Greasing Port with Brass Plug Shaft Diameter Ø A 25–50 mm External Diameter Ø B 43–70 mm Overall Length L 105–120 mm Minimum Support Length 38 mm Recommended Greasing Interval 200 Operating Hours Recommended Replacement Interval 4 Years or 500 Operating Hours Available Variants 6
Shaft Seal Selection
Select the appropriate STUFFY BOX EVO seal according to the propeller shaft diameter.
The selected shaft diameter determines the corresponding external seal diameter and overall length. Verify the shaft size, stern tube dimensions and available installation space before ordering.
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