Sulzer JCS2P Series – A3, A4, A5 Series
Category:Chemical Pump Seal Series
1. Double-end face mechanical seal,
2. Non-equilibrium type
Detailed introduction
The Sulzer JCS2 series mechanical seals are domestically produced shaft seals specifically designed for the extreme operating conditions of papermaking pressure screens. Leveraging their core structural design and domestic production advantages, these seals are well-suited to high-wear applications across multiple industries, making them the mainstream choice for enterprises seeking to upgrade their sealing solutions.
✅ Core Product Advantages
▶ Excellent corrosion and wear resistance: The friction pair is made of pressureless-sintered silicon carbide (SSiC), with a substrate of 316L or 2205 duplex stainless steel, providing robust resistance to erosion and corrosion from pulp and gypsum slurries.
▶ Low leakage, high reliability: Precision end-face grinding plus elastic compensation design ensures extremely low leakage and a service life far exceeding that of traditional packing seals.
▶ Compatible with high-solid-content media: Capable of handling complex media with solid content ≤30%, containing long fibers and fine particles, and featuring excellent anti-clogging and anti-scaling performance.
▶ Long-lasting and durable: In continuous operation scenarios such as papermaking pressure screens and desulfurization pumps, its service life outperforms both packing seals and conventional mechanical seals.
✅ Structural features
▶ External spring isolation: The spring assembly is located outside the media flow path, completely isolating it from corrosive slurries, preventing blockages and scaling, and extending component life.
▶ Static ring axial compensation: The static ring automatically adjusts its axial position to accommodate thermal expansion, shaft vibration, and minor misalignment, ensuring stable end-face contact.
▶ Fork-drive design: The rotating ring rotates synchronously with the shaft via the fork groove in the sleeve, eliminating any requirement for rotation direction and making it suitable for equipment that can operate in both forward and reverse directions.
▶ Non-equilibrium optimization: featuring a simple structure and controllable costs, specifically designed for medium- and low-pressure, high-abrasion pulp environments to prevent excessive wear on the end faces;
▶ Corrosion-resistant auxiliary seal: Made of fluororubber (FKM) or perfluoroelastomer (FFKM), it offers high-temperature resistance and chemical corrosion resistance, and is compatible with CIP cleaning.
✅ Applicable scenarios
▶ Papermaking industry: Core-compatible pressure screens for processing unbleached/bleached pulp, high-solids media containing long fibers and fillers;
▶ Chemical industry: Agitators and transfer pumps for sulfuric acid, hydrochloric acid, and chlor-alkali processes, capable of handling highly corrosive slurries;
▶ Power plant desulfurization: Replace imported seals with domestically produced ones for gypsum slurry pumps and slurry circulation pumps, thereby reducing operation and maintenance costs.
▶ Environmental protection sector: Suitable for shaft seals of equipment such as high-concentration sludge pumps and dewatering machines, addressing scenarios in wastewater treatment and solid waste management;
▶ Pharmaceutical biotechnology: Non-sterile-grade reaction system that meets CIP cleaning and cross-contamination prevention requirements.
🔥 Original-grade sealing solutions
Applicable host
Product Features
Use parameters
1. Medium: Suitable for clear water or corrosive media with a solid content of ≤20%.
2. Temperature: -20°C to 250°C
3. Pressure: 0~2.5 MPa
4. Linear velocity: ≤25 m/s
Keywords：Sulzer JCS2P Series – A3, A4, A5 Series
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Plan 23
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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
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