103 Series (for IS pumps)
Category:National Standard Seal Series
1. Internal single-end mechanical seal,
2. External spring
3. Non-equilibrium type
Detailed introduction
✅ Core Parameters and Performance
Corrosion- and wear-resistant materials: The friction pair can be configured with either silicon carbide/graphite or tungsten carbide/tungsten carbide combinations; the substrate is made of stainless steel, providing resistance to water, oils, moderately corrosive liquids, organic solvents, and media containing solid particles.
High Reliability and Vibration Resistance: Featuring a coiled-spring transmission design, the dynamic ring boasts excellent floating capability, making it highly resistant to equipment vibrations and shocks, ensuring stable operation with no failures.
✅ Structural features
Compact internal design: Directly installed inside the pump shaft’s inner diameter, featuring a small and space-saving structure that is compatible with most equipment cavities.
External spring isolation: The spring assembly is located outside the media flow path, completely isolating it from corrosion and blockage, thereby significantly extending the service life of the elastic element.
Static ring axial compensation: The static ring can automatically adjust its axial position to accommodate thermal expansion, vibration, and shaft misalignment, ensuring stable and consistent contact of the sealing surfaces.
Reliable transmission design: Fork or keyway transmission ensures synchronous rotation between the moving ring and the shaft, eliminating the risk of slippage and offering strong adaptability.
✅ Applicable scenarios
Typical media: water, oils, acid-alkali-salt solutions, organic solvents, and media containing solid particles.
Covered industries: Chemical industry—acid, alkali, and salt slurry transfer pumps; water treatment industry—clear water pumps, sewage pumps, and submersible pumps; water supply and drainage equipment for power, hydraulic, and steel industries; high-fiber and high-viscosity medium handling equipment for the paper-making, coal chemical, fertilizer, and aluminum production industries.
🔥 Preferred Sealing for Particle-Containing Operating Conditions
The 103 series mechanical seals are renowned for their high reliability, long service life, and ease of maintenance. They effortlessly overcome sealing challenges in applications involving solid particles and conditions prone to clogging, making them widely compatible with industrial pump equipment across multiple industries and ensuring stable production operations.
Applicable host
Product Features
Use parameters
1. Medium: Suitable for water, oils, moderately corrosive liquids, organic solvents, and media containing solid particles.
2. Temperature: -20°C to 180°C
3. Pressure: ≤1.6 MPa
4. Linear velocity: ≤15 m/s
Keywords：103 Series (for IS pumps)
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Seal Support Systems
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Plan 23
Core positioning: A single-face seal self-flushing solution specifically designed for hot-water pumps. The medium is guided out of the self-sealing cavity, cooled, and then returned to the sealing face, achieving integrated self-circulation for flushing and cooling without the need for additional medium replenishment.
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Plan 53A
Reason for adoption: Isolate the process fluid. Zero discharge of the process fluid.
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Plan 53B
Reason for adoption: Isolation of process liquids; zero discharge of process fluids; pressure exceeding the 53A scheme.
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Plan 53C
Reason for adoption: Isolate the process fluid. Achieve zero discharge of the process fluid. Pressure exceeds the 53A design specification. Dynamically monitor system pressure.
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