Overview
Sepco ML402 graphite compression packing delivers reliable sealing for centrifugal and reciprocating pumps, rotary equipment, and valve shafts in mild-service environments. This Multi-Lok braided construction uses synthetic, non-asbestos fibers treated with a specially formulated blend of lubricants with a saxoline base. Each strand is individually coated with graphite and receives a final secondary surface coating of graphite after braiding. The box includes five complete rings, ready for installation.
Key Features
- Multi-Lok braid with individual strand graphite coating plus surface coating for consistent lubricity
- Ductile lubricant formulation prevents wicking and provides superior sealability
- Suitable for mild acids, alkalies, steam, brine, and oil applications
- Rated for shaft speeds up to 1885 FPM and temperatures to 450°F (232°C)
- Two-track braiding design allows installation in knife gate valves and tight spaces
- Non-asbestos synthetic fiber construction meets modern environmental standards
Technical Specifications
The ML402 operates at shaft speeds to 1885 FPM with maximum temperature rating of 450°F/232°C and pH range of 4–10. Approximate yield for the 3/4″ size is 4 ft/lb. The braid style uses a Multi-Lok pattern for stable, uniform expansion during break-in and operation. Graphite-impregnated construction eliminates separate lantern ring requirements in many applications.
Typical Applications
This packing is recommended for general service on rotary and reciprocating equipment, including:
- Centrifugal pump shafts
- Gear pump and vane pump sealing
- Valve stem packing
- Reciprocating pump rod seals
- Industrial water circulation systems
- Light chemical and brine processing equipment
Compatibility & Replacements
Compatible With
- Standard compression packing glands (lantern ring or non-lantern designs)
- Pump bearing frames rated for 450°F shaft seal temperatures
- Rotary shaft equipment with surface speeds under 1885 FPM
- Mild-service hydraulic and pneumatic systems
Replaces / Drop-In Replacement For
The Sepco ML402 is a direct replacement for discontinued or worn ML402 packing in identical shaft sizes. Comparable competitive models include Anchor 1319, Anchor 1333, Chemstar 1398, John Crane 1340, Garlock 8913, and Palmetto 1007AF. Verify your existing packing model before ordering to ensure proper fit and performance.
Works With
- Standard pump and valve packing gland hardware (no special tooling required)
- Conventional packing extraction and installation tools
- Both packed-tube and cartridge-style gland configurations
