Pulp & Paper
High-performance sealing solutions for abrasive chemical slurries, corrosive bleach applications, and harsh pulp production environments
Pulp and paper mills require sealing solutions that resist aggressive chemicals, handle high temperatures, and perform reliably in wet, humid conditions. Inmarco delivers sealing products for digesters, bleaching systems, papermaking machines, and auxiliary equipment.
Critical Sealing Challenges
- Aggressive chemical exposure (chlorine dioxide, caustic soda, sulfuric acid)
- Hot, humid, and corrosive operating environments
- High-speed continuous operation with minimal downtime tolerance
- Abrasive fiber slurries and pulp stock causing accelerated wear
- Extreme temperature variations (ambient to 200°C in digesters)
- Black liquor handling with high solids content and alkalinity
- Steam condensate corrosion and thermal cycling stress
Proven Sealing Solutions
- Specially engineered chemical and abrasion-resistant packing systems
- High-performance packing for continuous digester applications
- Graphite-based packing for high-temperature steam valve service
- Custom-engineered abrasion-resistant packing for soft sleeve pumps
- Specially formulated packing for black liquor pump applications
- Corrosion-resistant metallic gaskets for aggressive chemical service
- PTFE-based packing for bleach plant and chemical handling
- CNAF gasketing solution
- PTFE/ePTFE gasketing solution
- Elastomeric gasketing solution
- Metal gasketing solution
- Custom-engineered sealing solutions for specialized specific application requirements
Typical Applications
Continuous and batch digesters
Black liquor pumps and circulation systems
Blow tank and blow-through systems
White liquor and green liquor pumps
Caustic soda and chlorine dioxide handling systems
Bleach plant pumps (chlorine, peroxide, oxygen stages)
Stock preparation pumps and consistency control valves
High-density and low-density stock pumps
Hydropulpers and drum pulpers
Pressure screens and centrifugal cleaners
Refiner dilution and approach flow systems
Recovery boiler feed pumps and steam systems
Evaporator circulation pumps (multiple effect systems)
Tall oil and turpentine recovery equipment
Chemical mixing and dosing systems
Paper machine headbox and approach flow systems
Press section hydraulic systems and vacuum pumps
Dryer section steam and condensate systems
Size press and coating application systems
Broke handling and white water recovery pumps
Pulp & Paper Solutions
Precision-engineered sealing systems designed for the most demanding applications
Industry-Leading Performance
Engineered for extreme conditions, tested for reliability, trusted worldwide
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