Pump Shaft Packing

Pump Shaft Packing is designed to control fluid leakage around rotating or reciprocating pump shafts. Installed inside the pump stuffing box and compressed by a packing gland, it forms a sealing barrier between the shaft or sleeve and the pump housing.

Compression packing remains widely used in centrifugal pumps, reciprocating pumps and general industrial pumping equipment where simple installation, adjustable sealing performance and convenient maintenance are important.

Features & Advantages

• Effective Shaft Sealing: Helps control process fluid leakage around pump shafts.

• Multiple Material Options: Available in PTFE, graphite, carbon fiber, aramid fiber and blended packing constructions.

• Wear-Resistant Designs: Reinforced fibers provide durability in suitable abrasive or demanding applications.

• Low-Friction Options: PTFE and graphite-based packing help reduce shaft friction under appropriate operating conditions.

• Adjustable Gland Compression: Allows packing contact pressure to be adjusted during installation and maintenance.

• Standard & Custom Dimensions: Available in different square cross-sections and packing lengths.

Materials & Construction

PTFE braided packing provides chemical resistance and low friction for selected industrial pumping applications.

Graphite-based packing offers good thermal conductivity and sliding characteristics, making it suitable for lubricated rotating shafts in selected process conditions.

Carbon fiber packing provides mechanical strength and heat resistance, while aramid fiber packing offers high abrasion resistance for applications involving solids or contaminated liquids.

Blended packing constructions combine different fibers and impregnating materials to balance wear resistance, shaft compatibility, chemical resistance and lubrication performance.

Operating Considerations

Pump packing selection depends on shaft surface speed, operating pressure, temperature, process fluid and lubrication conditions.

Many conventional packed pumps require controlled leakage to lubricate and cool the packing. Excessive gland compression can increase friction, accelerate shaft sleeve wear and cause overheating.

For abrasive or contaminated media, proper flushing arrangements and appropriate packing materials may be necessary to improve service life.

Typical Applications

• Centrifugal pumps

• Reciprocating pumps

• Water and wastewater treatment

• Chemical processing equipment

• Pulp and paper machinery

• Mining and slurry handling

• Industrial circulation and utility pumps

Standard & Custom Supply

CORA SEALS supplies pump shaft packing in various braided materials, square cross-sections and packing configurations for industrial distributors, pump repair companies and maintenance contractors.

Packing is available in coils, cut lengths and pre-cut rings according to application requirements.

For quotations, please provide the pump type, shaft or sleeve diameter, stuffing box dimensions, packing material and quantity.

Operating pressure, temperature, shaft speed, process fluid and flushing conditions are also recommended for selecting a suitable packing grade.