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Metal Bellow Cartridge Seals
Advanced Metal Bellow Cartridge Seals for Extreme Temperatures & Aggressive Media
At GSI – Globe Seal Industries, we design and manufacture precision metal bellow cartridge seals that deliver unmatched performance in demanding process conditions. These seals are engineered to handle high temperatures, aggressive chemicals, and fluctuating pressures — ensuring leak-free operation and extended equipment reliability.
Product Overview
Metal bellow cartridge seals utilize a flexible, welded metal bellows element that replaces traditional elastomer secondary seals. This design eliminates the problems of seal hang-up, hardening, or chemical attack often faced by O-rings in severe services.
Packaged in a pre-assembled cartridge form, these seals ensure easy installation, precise face loading, and consistent sealing performance, even under thermal cycling and extreme operating conditions.
Key Features
✔ Welded Metal Bellows Design: Provides flexibility to compensate for axial shaft movement, thermal expansion, and misalignments.
✔ Elastomer-Free Construction: No O-rings or dynamic elastomers means resistance to chemical swelling, hardening, and extrusion.
✔ Excellent High-Temperature Capability: Operates reliably in services exceeding 400°C (750°F) depending on materials.
✔ Balanced Seal Faces: Reduces distortion and wear under fluctuating process pressures.
✔ Pre-assembled Cartridge: Ensures proper axial setting, protects faces during handling, and simplifies installation.
✔ Multiple Spring & Bellows Options: Tailored to handle specific pressure, speed, and fluid requirements.
Materials of Construction
Our metal bellow cartridge seals are manufactured using carefully selected, high-quality materials to withstand harsh operating environments:
Bellows Elements: Inconel 718, Hastelloy C-276, AM350, or Alloy 20
Seal Faces: Silicon Carbide, Tungsten Carbide, Carbon, or Ceramic
Gland & Hardware: SS 316, Duplex Stainless Steel, Super Duplex, or special alloys
Optional Soft Metal Overlays: For improved sliding and anti-galling properties
This wide selection ensures compatibility with your process fluids, temperatures, and mechanical loads.
Applications
GSI metal bellow cartridge seals are trusted for critical services across many industries, including:
Oil & Gas Refining & Petrochemicals
Chemical & Fertilizer Plants (including acids & solvents)
High-Temperature Boiler Feed & Hot Oil Pumps
Power Generation & Steam Systems
Pharmaceutical & Specialty Chemical Reactors
Pulp & Paper Mills with Thermal & Chemical Cycling
Benefits of Choosing GSI Metal Bellow Cartridge Seals
✅ Leak-Free Operation in Harsh Conditions: Metal bellows withstand aggressive chemicals and high temperatures where elastomeric seals fail.
✅ Maintenance-Free Bellows: No dynamic elastomers means no hardening or compression set, extending service life.
✅ Reduced Equipment Wear: Balanced, flexible design accommodates shaft movement without overloading faces or bearings.
✅ Easy Installation & Replacement: Cartridge construction simplifies fitment, minimizes human error, and reduces downtime.
✅ Tailored Engineering Solutions: Custom bellows profiles, face combinations, and gland designs to meet your exact process challenges.