COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts
  • COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts
  • COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts
  • COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts
  • COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts
  • COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts
  • COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts

COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts

Product name:  Komatsu Cylinder Seal Kit
Part No: 707-99-25720,7079925720,
Size:50MM / 90MM 
Model Number:For   PC8000, PC7000
Material:Lron+Rubber
Packing:PP bag inside, carton box outside
Payment Terms:Western Union, L/C, T/T, MoneyGram, D/A, D/P
MOQ:Acceptable trial order
Shipping Mode:By air, by sea, by express(Fedex, UPS, DHL, TNT, etc.)
Place of Origin:Guangdong, China
Brand name:COGENG
CertifiCATEEion:ISO9001
Supply :500PCS
  • COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts
  • COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts
  • COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts,Excavator Solenoid Valve | Excavator Pressure Switch | Excavator Revolution Sensor | Excavator Wiring Harness | Excavator Throttle Motor --- COGENG High-Qulity Parts Service GAOGENG Provider,COGENG Komatsu 707-99-25720 Replacement Hydraulic Cylinder Seal Kit | Tornado Heavy Equipment Parts

Desciption

Technical Constants & Performance Data

Parameter Tornado Series Specification Standard OEM Comparison Testing Standard
Maximum Operating Pressure 50 MPa (7,252 PSI) 35 MPa (5,076 PSI) ISO 10766
Temperature Range -50°C to +150°C (-58°F to +302°F) -30°C to +100°C (-22°F to +212°F) ASTM D2000
Abrasion Resistance ≤ 25 mm³ loss (Taber, H-18 wheel) ≤ 80 mm³ loss ASTM D4060
Pressure Cycle Life 750,000 cycles at 35 MPa 250,000 cycles at 35 MPa ISO 10767-1
Salt Spray Resistance 1,000 hours without degradation 96 hours standard ASTM B117
UV Resistance 2,000 hours without cracking 500 hours typical ASTM G154
Chemical Compatibility Full range of hydraulic fluids including synthetics, HFC, HFD Limited to standard oils ASTM D471
Seal Hardness Range 85-98 Shore A (application optimized) 70-90 Shore A ASTM D2240
Thermal Conductivity 0.40-0.55 W/m·K 0.20-0.35 W/m·K ASTM E1225
Compression Set ≤ 5% (168 hours @ 125°C) ≤ 15% (70 hours @ 100°C) ASTM D395 Method B
Tear Strength ≥ 55 kN/m ≥ 35 kN/m ASTM D624 Die C
Extrusion Resistance 60 MPa without failure 40 MPa typical ISO 10766 modified
Service Life 8,000-12,000 hours in extreme service 3,000-5,000 hours typical Field validation data

Tornado Series Primary Seals

Component COGENG Tornado Part Number Material Technology Special Features Extreme Service Enhancements
Tornado Piston Seal TCG-PS-25720-01 HNBR with Nano-Ceramic reinforcement Pressure-adaptive geometry Handles 50 MPa continuous, -50°C to +150°C
Vortex Rod Seal TCG-RS-25720-01 Polyurethane with Graphene infusion Contaminant vortex exclusion 70% less friction, 60% more abrasion resistant
Cyclone Wiper System TCG-WS-25720-01 Triple-layer composite Active particle ejection Removes 98% of particles >5µm before seal contact
Hurricane Wear Bands TCG-WB-25720-01 Carbon nanotube PTFE matrix Self-lubricating, high PV PV rating 8.0 MPa·m/s, 50% higher than standard
Typhoon Backup System TCG-BS-25720-01 PEEK-Ceramic hybrid Zero-extrusion design Prevents extrusion at pressures up to 60 MPa

Specialized Extreme Service Components

Component Technology Performance Specification Field Application
Thermal Barrier Seals Micro-encapsulated phase change material Maintains performance from -50°C to +150°C Arctic mining and desert operations
Chemical Shield O-Rings FKM with fluorinated coating Resistant to all hydraulic fluids including fire-resistant Steel mills, foundries, hazardous environments
Abrasion-Resistant Scrapers Tungsten carbide particles in polyurethane 10x longer life in sandy/abrasive conditions Mining, demolition, beach restoration
Corrosion Defense Coatings Nickel-Teflon composite coating Withstands 2,000 hour salt spray test Offshore, coastal, and de-icing applications

Intelligent System Components

Component Smart Feature Benefit Compatibility
RFID Tagged Seals Each seal has unique RFID identifier Tracks installation date, service life, enables predictive maintenance Works with COGENG T-Connect system
Color-Changing Wear Indicators Changes color at 80% wear life Visual warning before failure, prevents unexpected downtime All Tornado Series seals
Installation Verification Tags QR code for installation confirmation Ensures proper installation, required for warranty validation Included with every kit
Environmental Sensors Built-in temperature and pressure memory Records operating conditions for failure analysis Available on request





Decompose pictures



Installation decomposition diagram


Extreme Service Preparation Protocol

  1. Field-Proven Workspace Standards:

    • Mobile clean tents available for field service (ISO 4406 Class 7 achievable anywhere)

    • TornadoSeries Field Kits include portable HEPA filtration systems

    • Temperature compensation tools for Arctic (-40°C) to Desert (+50°C) installations

    • Military-grade cleaning solvents that work with limited water availability

  2. Tornado Series Specialty Tools:

    • Hydraulic seal installation tools rated for 10,000+ installations

    • Laser-guided alignment systems for perfect seal placement

    • Digital torque wizards with Bluetooth reporting to cloud database

    • Bore inspection cameras with 4K resolution and measurement capability

    • Portable surface finishing systems for field repair of minor damage

  3. Extreme Environment Protocols:

    • Desert installations: UV protection, rapid assembly techniques

    • Arctic installations: Pre-heated components, cold-weather lubricants

    • Marine/offshore: Corrosion prevention, rapid installation to minimize exposure

    • Mining applications: Extra contamination control, abbreviated cleaning procedures

Tornado Series Critical Warnings

⚠️ EXTREME SERVICE REQUIREMENTS:

  • MANDATORY: Complete digital documentation for warranty validation

  • REQUIRED: Use only TornadoSeries installation tools and lubricants

  • ESSENTIAL: Environmental conditioning before installation

  • CRITICAL: Real-time upload of all measurements and torque values

⚠️ PERFORMANCE LIMITATIONS:

  • NOT for use with incompatible fluids (verify with COGENG fluid compatibility database)

  • MAXIMUM continuous temperature 150°C (short duration peaks to 175°C acceptable)

  • MINIMUM installation temperature -20°C (components can be pre-heated for colder)

  • REQUIRED break-in procedure for full warranty coverage

⚠️ INTELLIGENT SYSTEM FEATURES:

  • RFID system enables predictive maintenance scheduling

  • Color-change indicators provide 200-hour warning of seal wear

  • Digital records required for warranty claims and failure analysis

  • Cloud connectivity provides real-time technical support during installation



Frequently Asked Questions

A. When will get the items after I place order?
Q. Once your payment is confirmed,we will arrange the goods within 1~4 days; if not in stock, we will inform you before placing the order?

A. If I only know the excavator model, but can not offer parts No.,what should I do ?
Q. If possible, you can send us pictures of old products, nameplate or the size for reference.

A. How can you guarantee the quality??
Q. We will 100% test the goods before delivery. We also support video inspection.

A. How long will it take to delivery to my address??
Q. The normal delivery time is 3-7 days, depending on which country you are in.?

A : Which delivery method will you choose?
Q : By sea, air or express(DHL,Fedex,TNT, UPS, EMS etc.),Sometimes we will arrange as the customer's demand.

A: What's package? Can you give me the package according my requirement??
Q. We usually packed by standard exported box or carton. And yes we can pack as per your requirement.

A: Can the price be cheaper?
Q: Of course, you will be offered a good discount for a big amount.

A: Why should I choose to buy from you?
Q:Our advantages: 100% quality assurance, develop and manufature follow original ones;Quick response within 24 hours; Small order allowed;Reasonable stock and timely delivery;Neutral packing, customized packing are allowed. Positive customer feedback from abroad market;Excellent after-sales service.
A : Which payment terms can you accept?
Q : Paypal. Western Union, Bank Transfer, T/T...
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