Steam Turbine Seals
Product Overview
Steam turbine seals control steam leakage between rotating and stationary components while maintaining the internal pressure conditions required within the turbine. Because seal performance depends heavily on installation location, rotor geometry, running clearance, steam conditions, and turbine configuration, dimensional compatibility takes precedence over generic catalog selection for all replacement and overhaul projects. Manufacturing is executed strictly according to customer drawings, technical specifications, OEM part references, or approved physical samples, focusing on dimensional accuracy, material conformity, and rigorous inspection of critical sealing features.
Labyrinth Seals: Utilize a series of teeth, steps, grooves, or stepped geometries to restrict steam flow through controlled clearances, deployed in non-contact or near-contact operational environments.
Shaft-End / Gland Seals: Positioned around turbine shafts to regulate end-leakage, prevent steam escape, limit air ingress, or integrate within gland steam systems.
Interstage Seals: Installed between turbine stages to minimize internal leakage and maintain target pressure distribution, demanding exceptional dimensional precision.
Sealing Segments and Seal Strips: Segmented assemblies or replaceable strips requiring controlled geometry, segment fit, locating features, and precise assembly clearances.
Carbon Ring Seals: Configured for specialized rotating equipment where carbon grades, ring segmentation, and installation layouts match specific turbine designs.
Brush-Type Seals: Feature flexible metallic bristles to establish controlled sealing interfaces where tighter sealing is required than conventional clearance-based systems offer.
Application Sectors: Utility power generation plants, industrial power facilities, combined heat and power (CHP) systems, mechanical drives in process plants, and comprehensive MRO (Maintenance, Repair, and Overhaul) projects.
Manufacturing Process and Quality Control
Production Workflow: Drawing Review -> Material Verification -> Material Preparation -> Rough Machining -> Heat Treatment (Where Required) -> Precision Machining -> Deburring / Finishing -> Dimensional Inspection -> Final Inspection -> Packing.
Inspection Scope
Dimensional Inspection
Verification of critical inside/outside diameters, axial widths, and radial dimensions against approved engineering drawings.
Geometry Inspection
Evaluation of sealing teeth, grooves, steps, and segment interface features.
Material Verification
Confirmation of compliance with purchase and technical documentation.
Surface and Visual Inspection
Examination of machined surfaces, edges, and sealing features prior to packaging.
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