Overview
The SEPCO ML911W is an ultra-high-purity flexible graphite foil packing reinforced with Inconel wire, designed for demanding valve and equipment sealing applications across chemical processing, oil and gas, nuclear, and power generation industries. SEPCO ML911W graphite foil packing combines advanced Multi-Lok braiding technology with natural thermal and chemical resistance, eliminating the risk of residue buildup that occurs with added lubricants or binders.
Key Features
- Multi-Lok braided construction with no added lubricants, resins, or binders that cook out or become brittle
- Each yarn strand individually shielded with Inconel wire for reinforcement and high-temperature stability
- Ultra-high-purity graphite foil (99% carbon minimum, 1% ash maximum) serves as natural lubricant
- Fiberglass carrier provides additional strength and thermal stability
- Extremely low coefficient of friction for extended packing life and reduced shaft wear
- Available in bulk spools, die-formed rings, and spiral-wound configurations
Technical Specifications
- Material: Multi-Lok braided graphite foil with Inconel wire reinforcement
- Packing Width: 5/16 inch
- Graphite Purity: Minimum 99% carbon, maximum 1% ash
- Construction: Multi-Lok braid with Inconel wire shield
- Maximum Temperature (Oxidizing): 850°F / 454°C
- Maximum Temperature (Steam): 1,250°F / 538°C
- pH Range: 0–14 (except strong oxidizers)
- Standard Forms: 5 and 10 pound bulk spools, die-formed rings, Spiral Pak 3/16″ to 1″
- Recommended Applications: Valves, pumps, agitators, rotating shafts
Typical Applications
SEPCO ML911W is engineered for critical sealing in:
- Chemical Processing: High-temperature chemical service with corrosive fluid resistance
- Oil & Gas: Production and refining equipment requiring thermal conductivity and low leakage
- Power Generation: Turbine and pump applications with superheated steam
- Nuclear: Reactor cooling systems and auxiliary equipment
- Rotating Equipment: Pumps, compressors, and turbomachinery where thermal conductivity is critical
- Valve Sealing: Gate, globe, and check valves in extreme-temperature services
Compatibility & Replacements
Compatible With
- High-temperature valves rated to 850°F in oxidizing service
- Rotating shaft seals and stuffing boxes in industrial pumps and compressors
- Equipment requiring thermal conductivity and low coefficient of friction
- Chemical processing systems with corrosive fluids (pH 0–14, excluding strong oxidizers)
- Steam service applications to 1,250°F
Replaces / Drop-In Replacement For
- American Braiding Style 5000I
- Chemstar Style 1414
- Chesterton Style 1800
- Crane Style G581
- Garlock Style 5413
- Palmetto Style 5000W
- Teadit Style 2421
- Utex Styles 201/206
Works With
- Standard compression packing stuffing boxes and gland assemblies
- Lantern ring packing systems
- Industrial valve bonnets and handwheel assemblies
- SEPCO product finder and technical consultation (205.403.7500)
- Custom die-formed and spiral-wound packing configurations
