Material Combinations (Optional)
Seal face: TC/Silicon carbide/Carbon
Elastomers: Soft Graphite/FFKM/FKM
Metal bellow: Inconel 718 (UNS N07718) / Heat‑treated AM350
Springs: SUS316L/AM350/Inconel 718
Metal Parts: 2Cr13/SUS316L/4J42/Hastelloy
MOR 604 metal bellowsis a single‑end, balanced, metal bellows mechanical seal designed for high‑temperature, high‑pressure, and corrosive fluid applications. It replaces conventional coil springs with a welded metal bellows unit, eliminating dynamic O‑rings and significantly improving reliability in severe service conditions. This seal is widely used as a direct interchangeable replacement for John Crane Type 609 and similar models in centrifugal pumps, compressors, and agitators.
Features
Metal Bellows Elastic Element: Multi‑ply welded stainless steel / Inconel bellows provide consistent spring force, no clogging, and excellent compensation for shaft misalignment and thermal expansion.
Balanced Seal Face: Reduced seal face loading allows operation at higher pressures without excessive heat generation or wear.
No Dynamic Elastomers: Eliminates elastomer fatigue, hardening, or swelling in high‑temperature or corrosive environments, extending service life.
Bidirectional Drive: Bottom drive collar with set screws ensures reliable torque transmission regardless of shaft rotation direction.
Compact Structure: Fits standard pump cavities and is easy to install and maintain.
Advantages
Superior Misalignment Tolerance: Stationary design handles shaft runout and seal chamber misalignment far better than rotating seals.
Extreme Temperature Capability: Elastomer‑free design operates reliably at 425°C without seal failure from thermal aging.
Long Service Life: Reduced dynamic movement and high‑quality materials minimize wear and maintenance.
API‑682 Compliance: Meets stringent industry standards for process sealing reliability.
Versatility: Suitable for a wide range of aggressive media and operating conditions
Applications
Petrochemical & Refining: Crude oil, gasoline, diesel, hot oil
Chemical Processing: Acids, alkalis, solvents, and corrosive fluids
Power Generation: Boiler feed water, thermal oil, condensate
Pharmaceutical & Food: High‑temperature clean fluids
Pulp & Paper: Black liquor, white liquor, and abrasive slurries
Hot Tags: MOR 604 High Temperature Metal Bellow Mechanical Seal, China MOR 604 High Temperature Metal Bellow Mechanical Seal suppliers, factory, api mechanical seal, bellows mechanical seal, cartridge mechanical seal, double mechanical seal parts, double shaft seal, rotating mechanical seal
