Skydrol 500B-4 (Type IV) Quart

Original price was: $62.25.Current price is: $59.55.

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Skydrol 500B-4 is a phosphate ester–based aviation hydraulic fluid engineered for use in modern aircraft hydraulic systems requiring exceptional fire resistance and reliable high-performance operation. Widely used throughout commercial and turbine aircraft applications, Skydrol 500B-4 is formulated to provide excellent thermal stability, oxidation resistance, and protection against deposits and fluid degradation under demanding operating conditions.

Designed for aircraft hydraulic systems exposed to high temperatures and severe service environments, Skydrol 500B-4 also offers excellent resistance to fire hazards compared to conventional petroleum-based hydraulic fluids.

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Features:

  • Fire-resistant phosphate ester hydraulic fluid
  • Excellent thermal and oxidative stability
  • Provides outstanding wear protection for hydraulic components
  • Protects against rust and corrosion
  • High resistance to deposit and sludge formation
  • Maintains performance across a wide operating temperature range
  • Purple color for easy identification

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Specifications & Approvals:

  • Boeing BMS 3-11 Type IV Class II
  • SAE AS1241
  • Airbus-approved applications requiring Type IV phosphate ester hydraulic fluid
  • Additional OEM approvals and specifications may apply

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Important Compatibility Information: Skydrol 500B-4 is not compatible with mineral oil-based hydraulic fluids such as MIL-PRF-5606, MIL-PRF-83282, or MIL-PRF-87257. Use only in systems specifically approved for phosphate ester hydraulic fluids.

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