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The proven carbon floating ring seal - Optimized to meet the highest standards
Available as modular Cartridge-Seal
Flexible layout due to operating parameters
Weight optimized
Minimal vibrating mass
High operational realiability
Advantages
Plug & Run
Long-term operation time
More compact design for tight installation spaces
Durable ring design with a robust anti-rotation device
Contactless, low-wear technology ensures maximum operational reliability
Operating range
Shaft diameter: d = 20 ... 200 mm (0.79" … 7.87")
Operating pressure: p = vacuum ... 250 bar (3.626 PSI) abs.
Operating temperature*: t = -120 ... +225 °C (-184 °F … +437 °F)
Sliding velocity: vg = max. 240 m/s (787 ft/s)
Shaft requirements:
Recommended surface roughness: Rz4
Recommended wear guard: >58 HRC
* Higher operating temperatures possible on request
Materials
Seal ring: Carbon with titanium bandage
Chamber and housing parts: 1.4021, 1.4571, Hastelloy®, Titan, Inconel®, others
Secondardy seal (elastomer): Fluorocarbon rubber (Viton®), Perfluorocarbon rubber (FFKM), special PTFE seals on request
Secondary seal (flat gasket): Statotherm®-HT/HD, Burasil
Standards and approvals
FDA
Recommended applications
Integral-gear compressors (one or multi-stage)
Turboexpanders
Turbines
CCUS
LNG
Hydrogen
Energy-storage
Oil and gas industry
Refining technology
Chemical industry
Petrochemical industry
Pulp- and paper industry
Metal production and processing
Power plant technology
Gases
Notes
Notes:
General technical features of carbon floating ring seals – compact, efficient, and reliable
Our carbon floating ring seals offer a high-performance solution for demanding sealing requirements in machines and systems. The most important advantages at a glance:
Compact design: Short axial and radial dimensions – ideal for use in small installation spaces.
Minimal leakage: The very small operating gap ensures extremely low leakage and increases efficiency.
Dry running: No need for additional lubrication – low maintenance and reliable operation.
Adaptable: The sealing rings follow radial shaft deflections and ensure reliable sealing even under dynamic operating conditions.
Contact-free running: The sealing rings run without contact, which means there is no additional friction – this saves energy and protects the machine.
Product variants
WKA1200: The Espey standard version
The modular chamber design allows for even more customer-specific adaptations
More compact design for tight installation spaces
Durable ring design with a robust anti-rotation device
Bilateral relief of the sealing ring in the chamber for short-term backpressure operation
Axially spring-loaded sealing ring – no contact with the shaft due to its own weight
Contactless, low-wear technology ensures maximum operational reliability
WKA1200-Cartridge: Plug & Run
First to combine: the shaft sleeve, seal, and housing components
fully balanced, ready-to-install unit
Improved handling thanks to integrated components
Simplified installation
Easier maintenance
Minimizes the risk of component damage
Coal-Floating-Ring- Service-Concept:
Simply select the scope you need
Available in WKA1200 standard dimensions and also customizable
Similar products
Espey Magna500+
the large seal for diameters from 500 mm