GB103 Water Pump Mechanical Seal
The GB103 Water Pump Mechanical Seal provides a reliable, leak-free barrier between rotating pump shafts and stationary housings in centrifugal pump applications.
Key Features
- Single face mechanical seal for sewage pumps
- Dependent on direction of rotation
- Unbalanced design
- Single spring configuration
- Non-cartridge mechanical seal
- Compatible with water, oil, and moderately corrosive media
Operating Limits
| Shaft Diameter |
Pressure |
Temperature |
Sliding Velocity |
| 16-120mm |
Up to 1MPa |
-25°C to 220°C |
20m/s |
Material Specifications
| Component |
Materials |
| Rotary Ring |
Carbon, Silicon Carbide (SiC), Tungsten Carbide (TC), Ceramic |
| O-Ring |
EPDM, NBR, AFLAS, Kalrez, PTFE |
| Spring & Metal Parts |
SUS304, SUS316, Titanium, 904L |
| Stationary Ring |
Carbon, Silicon Carbide (SiC), Tungsten Carbide (TC), Ceramic |
Performance Advantages
- Operates in extreme temperature ranges
- No dynamically loaded O-ring
- Excellent self-cleaning effect
- Suitable for low-end sterile applications
Applications
Designed for handling strong corrosive fluids including sulphuric, nitric, phosphoric, and hydrochloric acids.
Shipping & Payment Information
Port of Loading: Shanghai
Shipping Methods: DHL, UPS, FEDEX, TNT, etc.
Payment Terms: T/T, Western Union, MoneyGram
Custom Services
- OEM/ODM orders available
- Customized mechanical seals based on your drawings or requirements
- Small quantity orders accepted
- Excellent quality with competitive pricing
Product & Application Basics
What is the primary function of the GB103 Water Pump Mechanical Seal?
The GB103 Water Pump Mechanical Seal creates a reliable, leak-free barrier between the rotating pump shaft and the stationary housing, specifically designed to prevent the escape of pumped fluids in centrifugal pump applications.
For which specific pump types is the GB103 Water Pump Mechanical Seal designed?
The GB103 is a standardized cartridge mechanical seal commonly engineered for various end-suction centrifugal pumps, including general service water pumps, cooling water pumps, and hot water circulation pumps.
Installation & Handling
What are the critical pump tolerances required for a successful installation of the GB103 Water Pump Mechanical Seal?
For reliable operation, the pump must meet strict mechanical conditions: shaft axial play ≤ 0.10 mm, shaft radial runout ≤ 0.04 mm, and seal chamber face squareness ≤ 0.04 mm.
What is the correct procedure to install the GB103 Water Pump Mechanical Seal?
Always follow the manufacturer's manual. Key steps include cleaning all components, lubricating O-rings with the fluid to be pumped, sliding the cartridge onto the shaft without hammering on the seal faces, and evenly tightening the gland bolts. Crucially, the pump must be primed with fluid before start-up to prevent instant dry-running damage.
Material Selection & Customization
How do I select the appropriate seal face materials for my specific operating conditions when using the GB103 Water Pump Mechanical Seal?
The choice of seal face materials is critical for determining the service life and reliability of the seal. The selection should be based on the specific characteristics of the fluid being pumped. Please refer to the table below for general guidance.
| Operating Conditions |
Recommended Face Pairing |
Key Benefits |
| Clean water, neutral solutions, low-viscosity oils (General Service) |
Silicon Carbide (SiC) / Carbon-Graphite or Tungsten Carbide (WC) / Carbon-Graphite |
Cost-effective, good self-lubricating properties, suitable for most common applications |
| Fluids with fine particles, abrasive slurries (Abrasive Service) |
Silicon Carbide (SiC) / Silicon Carbide (SiC) |
Excellent resistance to abrasion and particle wear, leading to a longer service life |
| High temperature, highly corrosive chemicals (Chemical / Hot Water Service) |
Reaction-Bonded Silicon Carbide (RB SiC) / Filled PTFE or Specialty Alloys |
Superior resistance to chemical attack and high temperatures |
How do I choose the correct O-ring material for the GB103 Water Pump Mechanical Seal?
The O-ring material must be compatible with both the pumped fluid and the operating temperature. Common options include:
Nitrile Rubber (NBR): Suitable for petroleum-based oils and water at moderate temperatures.
Ethylene Propylene Diene Monomer (EPDM): Ideal for hot water, steam, and weak acids/bases, with good weather resistance.
Fluoroelastomer (FKM/Viton): A versatile choice for a wide range of chemicals, oils, and elevated temperatures.
Perfluoroelastomer (FFKM/Kalrez): Used for extreme chemical environments and very high temperatures.
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