Products Description
13.5HP Engine 3″ Water Seal with Bronze Sleeve 108-35
Mechanical Shaft Seal Assembly for 3-Inch Water Pumps
The 108-35 water seal is a mechanical shaft seal assembly engineered to prevent fluid leakage between the rotating shaft and stationary pump housing on 13.5HP gasoline engines driving 3-inch water pumps. Based on the industry-standard 108 series mechanical seal design, this model is sized for 35mm diameter shafts and features a durable bronze sleeve that protects the pump shaft from wear. The seal follows the 108 series mechanical seal standard (GB6556-86, DIN24960-80, ISO3069-74) and is a critical component for maintaining pump efficiency and preventing leaks in agricultural irrigation, construction dewatering, and industrial water transfer applications.
Technical Profiles & Materials
108-35 Mechanical Seal Design – This 108 series mechanical seal is designed specifically for 35mm shaft diameters. Based on standard specifications, the 108-35 features an overall length (L) of 37mm, outer diameter (D) of 50mm, with L3 of 28.5mm and L4 of 8mm. The seal uses a single spring, unbalanced, internal mounting configuration suitable for pump applications.
Premium Seal Face Materials – The mechanical seal features stationary and rotating faces available in multiple material combinations. Standard options include carbon vs ceramic, silicon carbide vs graphite, or tungsten carbide for abrasive fluid applications. Silicon carbide vs silicon carbide combinations offer superior wear resistance for demanding pumping environments.
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Model | 108-35 (108 series mechanical seal) |
| 2 | Shaft Diameter (D1) | 35 mm |
| 3 | Overall Length (L) | 37 mm |
| 4 | Outer Diameter (D) | 50 mm |
| 5 | Housing Bore (D7) | 50 mm |
| 6 | L3 Dimension | 28.5 mm |
| 7 | L4 Dimension | 8 mm |
| 8 | Seal Type | Single spring, unbalanced, internal mounting |
| 9 | Max Pressure | ≤0.5 MPa (5 bar) |
| 10 | Max Speed | ≤13 m/sec |
| 11 | Operating Temp Range | -40°C to +125°C (depending on elastomer) |
| 12 | Sleeve Material | Bronze |
| 13 | Seal Faces | Carbon/ceramic, SIC/graphite, or TC/SIC options |
| 14 | Secondary Seal | NBR / FKM (Viton) / EPDM |
| 15 | Spring Material | SUS304 / SUS316 stainless steel |
| 16 | Application | 13.5HP engine-driven 3″ water pumps |
Products Application
Agricultural Irrigation
Ideal for 3-inch water pumps used to draw water from ponds, rivers, and reservoirs for crop irrigation. The 108-35 seal prevents leakage and contamination, ensuring consistent pump performance during extended operation on 13.5HP petrol engine pumps commonly used on farms and rural properties. The bronze sleeve provides robust protection against abrasive particles in irrigation water.
Construction and Dewatering
Essential for construction site pumps handling water from excavations and flooded areas. The mechanical seal prevents leakage that could compromise dewatering efficiency. The durable bronze sleeve and silicon carbide seal face option withstand the abrasive conditions common in construction dewatering applications.
Industrial Water Transfer
Suitable for pumps handling water and mild chemicals in industrial settings. The 108-35 seal can be specified with FKM elastomer and silicon carbide faces for improved chemical resistance, making it suitable for various industrial fluid transfer applications requiring reliable sealing under continuous operation.
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
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FAQ
Q: How do I confirm this seal fits my 3-inch water pump?
A:Check your pump's shaft diameter (35mm) and housing bore (50mm). This 108-35 seal fits 35mm diameter shafts in standard 3-inch centrifugal pumps driven by 13.5HP engines. Verify the seal type matches your existing 108 series mechanical seal.
Q: What is the advantage of the bronze sleeve?
A:The bronze sleeve provides a durable, replaceable wearing surface for the seal faces, protecting the pump shaft from scoring and corrosion. It extends pump life and allows for easier seal replacement during maintenance. Bronze is commonly used in water pump applications due to its excellent corrosion resistance and wear characteristics.
Q: What elastomer material should I choose?
A: NBR is suitable for water and mild chemicals. FKM (Viton) offers superior chemical resistance and a wider temperature range (-40°C to +125°C). EPDM provides excellent resistance to hot water and mild acids. Choose based on your pumped media and operating temperature.
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