ANDRITZ Customized High Quality Mechanical Centrifugal Pump Gland Packing

Our brand delivers turnkey fluid machinery capabilities to industrial clients worldwide — encompassing everything from individual precision components to engineered system solutions, reinforced by direct technical support and field service deployment. The businesses we serve include pump and rotating equipment supply, frequency converter and drive electronics, servo control systems, operator interface and programmable logic control panels, motor management and switchgear assemblies, electric rotating machinery and geared speed reducers, mechanical seal systems and packaged seal assemblies, flexible shaft coupling hardware, and gearbox and transmission engineering. For clients requiring hands-on support, we dispatch our own specialists overseas to perform FARO 3D scanning of pump internals for reverse manufacturing, precision laser alignment of pump and driver trains, start-up and performance verification of newly installed equipment, and on-site diagnosis and rectification of operating machinery.

ANDRITZ Packing Seal (also called compression packing or gland packing) is a shaft sealing method in which braided or twisted fiber packing rings are compressed around the shaft inside the stuffing box by a gland follower. The packing creates a controlled leakage path along the shaft surface that lubricates and cools the packing while limiting the escape of pressurized fluid from the pump.

Packing seals remain in wide use because they are simple to install, lower in initial cost than mechanical seals, tolerant of shaft runout and vibration, and can operate on fluids containing minor solids that would rapidly destroy a mechanical seal face. They also allow a small controlled leakage that provides cooling and lubrication to the packing-shaft interface.

Typical packing seal cross sections for centrifugal pumps use 4–6 packing rings, each cut to length with a diagonal or butt joint, staggered around the shaft circumference. The lantern ring (when used) is positioned between the rings to distribute lubricant or quench water.

Our ANDRITZ packing seal sets are supplied as pre-sized rings cut to the correct shaft and bore dimensions, made from material grades matched to the specific pump service conditions.

• Pre-Cut Rings — Rings are cut to the exact shaft and bore dimensions, with joint angle selected for the application (45° butt joint for standard, 30° for high-pressure)
• Material Verification — Each packing lot is verified against the material specification before cutting; certs available on request
• Compatibility Guarantee — We match the packing material to the fluid type, temperature, and pressure profile of your ANDRITZ pump service
• Set Packaging — Rings are supplied as a complete set for one stuffing box, with the correct number of rings (including lantern ring if required)
• Installation Support — Job-specific installation notes and torque recommendations for gland bolt tightening provided with each set