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Custom Gear-Tooth Profile High Temperature Resistant Multi-Line Compression Sealing Gear Type Gasket for Steam Turbines

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Custom Gear-Tooth Profile High Temperature Resistant Multi-Line Compression Sealing Gear Type Gasket for Steam Turbines

Material options : Carbon steel, 304/316L stainless steel, Inconel/Hastelloy alloy, Monel alloy

Compression resilience : Stable under thermal cycling

Outer diameter : Up to 4000mm

Tooth height : Customizable

Temperature resistance : Up to 700℃

Surface coating : Flexible graphite, PTFE fluoroplastic, Soft silver plating

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1. Product Introduction
Custom Gear-Tooth Profile Gaskets for Steam Turbines

Our bespoke gear type gaskets are precision-engineered sealing components specially designed for steam turbine barring gear assemblies, gearboxes, rotor flange joints, cylinder split surfaces and high-temperature transmission gear mating faces.

Also known as tooth serrated metal gaskets, gear profile sealing washers, they adopt unique concentric gear-tooth convex structure to deliver ultra-reliable sealing under high temperature, high steam pressure, frequent thermal expansion & vibration working conditions of thermal power, waste heat & industrial steam turbines.

All dimensional parameters, tooth profiles, base materials and coating layers are fully customized to match your turbine original equipment, retrofitted units or newly designed turbine systems.

2. Unique Gear-Tooth Structural Advantages
Multi-Line Compression Sealing Performance

The continuous concentric gear tooth ridges form multiple independent sealing loops after bolt tightening. Even under turbine thermal cycling, slight flange deformation or minor surface scratches, the gear teeth can closely fit the metal contact surface to block steam leakage, far outperforming flat metal gaskets and ordinary spiral wound gaskets.

Strong Anti-Vibration Stability

The serrated gear tooth structure provides excellent elastic buffer capacity against low-frequency vibration from turbine barring gears and rotor rotation. No gasket shifting, crushing or seal failure during long-term continuous unit operation.

Uniform Stress Distribution

Precision CNC machined symmetrical gear tooth profile ensures even compression stress across the whole gasket surface, avoiding local over-compression and tooth breakage during installation.

Reusable & Easy Maintenance

Compared with disposable soft packing gaskets, our metal gear type gaskets maintain complete tooth structure after disassembly, available for repeated use in planned turbine overhauls, cutting spare part procurement costs.

3. Full Customization Service Items
3.1 Dimension Customization
  • Outer diameter, inner diameter, overall thickness, single tooth height, tooth pitch, tooth quantity fully tailor-made
  • Custom mounting bolt holes, positioning notches, alignment tabs for quick installation matching turbine flange holes
  • Ultra-large size support: Custom gear gaskets up to 4000mm OD for large-capacity steam turbine cylinder split joints
  • Micro-size small gear gaskets for barring gear box end covers and pinion sealing faces
3.2 Material Customization (Adapt to Turbine Working Medium & Temperature)
Base Metal Substrate
  • Carbon steel: For low-temperature, low-pressure auxiliary turbine gearboxes
  • 304 / 316L stainless steel: Standard for conventional thermal power steam turbines
  • Inconel / Hastelloy alloy: Supercritical & ultra-supercritical high-temperature main turbine cylinders
  • Monel alloy: Coastal power plants with salt fog corrosion, chemical plant waste heat turbines
Optional Surface Soft Coating (Improve Sealing Tightness)
  • Flexible graphite coating: Resist high temperature up to 650℃, adapt to dry saturated steam
  • PTFE fluoroplastic coating: Anti-acid & alkali corrosion, for chemical industrial steam turbines
  • Soft silver plating: Ultra-high vacuum sealing, zero leakage for precision turbine transmission gear chambers
3.3 Working Condition Customization
  • High-temperature steam resistant design (up to 700℃) for main turbine cylinder joints
  • Anti-sulfur & anti-corrosion treatment for coal-fired power plant flue gas waste heat turbines
  • Low-pressure lightweight gear gaskets for small industrial back-pressure turbines
  • Retrofit customization: Reverse drawing & production for obsolete, discontinued turbine original gear gaskets
  • Explosion-proof reinforced tooth structure for marine steam turbine auxiliary systems
3.4 OEM & Technical Customization
  • Engrave customer logo, turbine unit model, specification marks on gasket surface
  • One-stop service: Free CAD/3D drawing design, finite element compression sealing simulation, sample trial production, batch mass manufacturing
  • Custom packaging for long-term spare parts storage, anti-rust treatment for overseas export shipment
4. Core Product Strengths for Power Plant Users
  • ✅ Zero Steam Leakage Under Thermal Cycling
    Multi-ring gear tooth labyrinth sealing eliminates steam escape at turbine split flanges, reducing energy loss and avoiding safety hazards caused by high-pressure steam leakage.
  • ✅ Long Service Life & Low Replacement Frequency
    Alloy metal base + wear-resistant coating resists thermal fatigue, oxidation and medium erosion; service life 3–5 times longer than ordinary composite gaskets, cutting annual spare part expenses.
  • ✅ Perfect Fit, No On-Site Modification
    Custom fabricated strictly according to your turbine flange drawings or old sample gaskets. Direct replacement without machining turbine mating surfaces, shortening overhaul downtime.
  • ✅ High Compression Resilience
    Unique gear tooth elastic structure retains stable sealing pressure after thousands of turbine startup-shutdown cycles, no permanent deformation or seal attenuation.
  • ✅ Strict Full-Range Quality Inspection
    Each customized gear type gasket undergoes:
    Raw material chemical composition & tensile strength testing
    CNC tooth profile precision inspection
    Flatness, thickness uniformity full scanning
    High-temperature compression sealing simulation test
    Complete test certificates supplied together with goods for power plant equipment filing.
5. Main Application Scenarios
  • Subcritical / Supercritical / Ultra-supercritical thermal power plant steam turbine cylinder split flanges
  • Turbine barring gear box, bull gear & pinion housing sealing joints
  • Industrial cogeneration steam turbines (steel, paper, chemical, sugar mill)
  • Waste heat recovery steam turbine high-temperature sealing surfaces
  • Marine auxiliary steam turbine transmission gear chambers
  • Turbine unit renovation, spare part replacement, old equipment upgrade projects
6. Standard Customization Process
  1. Demand Confirmation: Customer provides turbine model, flange drawing, working temperature/pressure, medium type, gasket sample photos or physical samples
  2. Engineering Design: Technical team outputs 2D/3D drawings, material & coating solution for customer approval
  3. CNC Precision Turning & Gear Tooth Milling
  4. Surface coating / anti-corrosion treatment
  5. Multi-procedure dimensional & performance testing
  6. Anti-rust packaging, delivery & global after-sales technical support

Product Tags:

high temperature resistant gear gasket

      

steam turbine compression sealing gasket

      

multi-line gear-tooth profile gasket

      
Wholesale Custom Gear-Tooth Profile High Temperature Resistant Multi-Line Compression Sealing Gear Type Gasket for Steam Turbines from china suppliers

Custom Gear-Tooth Profile High Temperature Resistant Multi-Line Compression Sealing Gear Type Gasket for Steam Turbines Images

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