Stationary Spring Configuration

Product Overview; 

The LS810 is a robust, self-contained single cartridge mechanical seal engineered specifically for reliable operation in abrasive, solids-laden, and corrosive process environments. Featuring a hydraulically balanced, multi-spring pusher design with a stationary spring configuration, this seal is optimized for light slurries containing up to 10% solids by weight. By isolating the spring mechanism from the process fluid, the LS810 effectively eliminates clogging, solids accumulation, and spring hang-up. Designed to operate without the need for an external flush, process bypass, or water-based cooling, it prevents product dilution while significantly reducing water consumption and operational costs—delivering a highly sustainable, water-efficient sealing solution for the harshest industrial environments. 

 

Technical Key Features; 

• Bi-directional operation: Seals operate irrespective of shaft rotation direction, reducing stocking complexity. 

• Hard-faced seal combinations: Abrasion-resistant face materials extend service life in abrasive slurry environments. 

• Metric and inch sizes available: Offers global compatibility and easy retrofit across international equipment standards. 

• Optimized for light slurries: Engineered for light slurries up to ~10% solids by weight and low-to-moderate abrasiveness (application-dependent). 

• Water-saving design: Eliminates need for continuous water flush in most applications, supporting plant sustainability and reduced operating costs. 

• Reliable under transient conditions: Maintains sealing performance during pressure fluctuations, intermittent dry-running, and variable solids loadings (case-dependent). 

• Hydraulically line-to-line balanced geometry: Minimizes net hydraulic face loading, reduces wear and heat generation, and improves stability under fluctuating pressure and flow. 

• Cartridge and semi-cartridge options: Factory-assembled, pressure-tested cartridge units simplify installation, ensure correct alignment, minimize field errors, and shorten downtime. 

• Quick installation and easy serviceability: Modular cartridge design allows fast removal and replacement, lowering mean time to repair and life-cycle maintenance costs. 

• Multiple-spring, stationary arrangement: Multi-spring design with springs isolated from the process fluid ensures uniform face loading, prevents clogging, and reduces spring hang-up. 

• Heavy-duty, erosion-resistant profile: Smooth internal geometry and robust materials reduce turbulence, solids ingress, and abrasive erosion in crystallizing, viscous, or erosive fluids. 

• Flush-free and quench-free operation: Designed to run without external flush, quench, or cooling water in most slurry services, eliminating product dilution and reducing water consumption. 

• Broad equipment compatibility: Suitable for slurry pumps, agitators, mixers, reactors, and other rotary process equipment in mining, mineral processing, chemical, fertilizer, pulp & paper, and wastewater applications. 

 

Service Overview; 

Parameter	Value
Equipment	Slurry Pumps, Agitators, Mixers, Reactors, Rotary Equipment
Fluid	Abrasive Slurries, Crystallizing Fluids, Molasses, Tailings, Chemical Media
Service Nature	Abrasive, Corrosive, Solids-Handling, Viscous & Crystallizing
Operating Mode	Continuous & Intermittent Industrial Duty

 

 

Specifications; 

Specification	Min	Max	Typical / Notes
Shaft Size	20 mm (0.750”)	300 mm (12.000”)	Metric & inch sizes available
Pressure	Vacuum	16 bar (232 psi)	Depending on seal arrangement
Temperature	-20°C (-4°F)	+180°C (+356°F)	Based on elastomer selection
Speed	—	3000 RPM	Application dependent
Seal Design	—	—	Single, balanced slurry seal
Spring Type	—	—	Stationary non-clogging spring configuration

 

Materials; 

Component	Standard Material	Optional Material	Comment
Seal Faces	Silicon Carbide / Carbon	Tungsten Carbide / Silicon Carbide	Abrasion-resistant face combinations
Elastomers	FKM (Viton)	EPDM / PTFE / FEP Encapsulated	Chemical compatibility dependent
Metal Parts	SS 316	Duplex SS / Hastelloy / Alloy 20 / Titanium	Corrosion resistance enhancement
Springs	SS 316	Hastelloy Alloy	Isolated from slurry media

 

Applications; 

• Dyeing Industry 

• Pulp & Paper Processing 

• Thermal & Power Plants 

• Coal & Iron Ore Processing 

• Fertilizer & Chemical Plants 

• Mining & Mineral Processing 

• Food, Sugar & Distillery Plants 

• Alumina & Uranium Processing 

• Oil & Petrochemical Processing 

• Waste Water Treatment Systems 

• Offshore Sand/Gravel Oil Extraction 

• Gold, Copper, Zinc & Nickel Refining 

• Potash, Pigment & Phosphate Plants 

• Pharmaceutical & Solvent Industries 

• Steel Making & Synthetic Rutile Plants 

• Crystallization & Slurry Transfer Duties 

• Wet Cement & Tailings Disposal Systems 

• Flue Gas Desulphurization (FGD) Systems 

• Mixers, Agitators & Other Rotary Equipment 

 

Operating Limits; 

Parameter	Value
Pressure	Up to 16 bar (232 psi)
Temperature	-20°C to +180°C (-4°F to +356°F)
Speed	Up to 3000 RPM
Size Range	20 mm to 300 mm (0.750” to 12.000”)
Solid Content	10% by weight
Particle Size	1,000 Microns Maximum
Particle Hardness	4 Mohs Maximum

 

Engineering Note;
Operating limits and material combinations shown are based on typical slurry-duty mechanical seal applications and should be verified against actual process conditions, slurry concentration, particle size, shaft deflection, and equipment operating parameters before final selection.