Material Combinations (Optional)
Seal Faces:
Primary: Silicon Carbide (SiC) / Silicon Carbide (SiC)
Secondary: Silicon Carbide (SiC) / Carbon Graphite
Secondary Seals: Graphite (standard for HT), PTFE, Perfluoroelastomer (FFKM)
Bellows & Metal Parts: AM 350, Hastelloy C-276, 316L Stainless Steel
MOR 286HT is a high-temperature, dual-tandem, fully cartridge-mounted metal bellows mechanical seal engineered for the most demanding sealing applications involving toxic, carcinogenic, hazardous, and high-temperature process fluids. It signifies its optimized performance for extreme thermal conditions, eliminating elastomer limitations and delivering zero-emission sealing compliance. This pre-assembled, self-contained cartridge unit integrates a rotating metal bellows assembly, dual seal faces, and a robust gland, ensuring error-free installation and maximum operational safety in chemical, petrochemical, and refining processes.
Features
High-Temperature Optimized Metal Bellows
Constructed from heat-treated AM 350 or Hastelloy C-276 alloys for exceptional high-temperature strength and corrosion resistance.
Rotary bellows design provides self-cleaning action, preventing clogging in slurry and particulate-laden services.
Low spring-rate design minimizes heat generation and ensures consistent face loading.
Graphite secondary seals replace elastomer O-rings, enabling service up to 400°C (750°F).
Dual Tandem Cartridge Architecture
Double-balanced seal faces for safe operation with barrier fluid pressures either above or below process pressure.
Tandem bellows arrangement delivers superior pressure handling and safety against catastrophic failure.
Large-diameter, bi-directional barrier fluid ports for optimal circulation and cooling.
Integrated high-efficiency pumping vanes create a helical flow pattern for superior internal heat dissipation.
Cartridge Convenience & Reliability
Pre-assembled and pre-set: No on-site measurement or spring adjustment required, drastically reducing installation time and errors.
Robust gland design minimizes distortion from bolt torque.
Bidirectional rotation compatible with clockwise and counterclockwise equipment.
No dynamic elastomers, eliminating common failure points in high-temperature environments.
Advantages
Extreme Temperature Resistance: Operates reliably beyond elastomer limits, up to 400°C.
Zero Emission Compliance: Dual-tandem design ensures containment of toxic and hazardous vapors.
Self-Cleaning Performance: Rotary bellows prevent clogging in abrasive, slurry services.
Hassle-Free Installation: Cartridge design eliminates complex setup and human error.
Long Service Life: Robust metal bellows and high-grade materials minimize maintenance and downtime.
Applications
Chemical & Petrochemical Processing: High-temperature acids, solvents, and hazardous chemicals
Refining: Thermal oil, hot hydrocarbons, and catalytic processes
Pharmaceuticals & Fine Chemicals: Sterile, high-temperature, and zero-emission processes
Power Generation: Flue gas desulfurization (FGD) and high-temperature water systems
Pulp & Paper: Bleaching and high-temperature cooking processes
OEM Replacement: Direct interchange for standard Chesterton 286 and equivalent high-temperature seals
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