SKYDROL LD-4, Fire Resistant Hydraulic Fluid 946ml

Applications/Uses

• Aviation hydraulic systems

LD-4 Overview

Skydrol LD-4 was introduced in 1977 and also it is well known around the world. At the time of its introduction, it was a breakthrough product, solving problems of valve erosion and thermal stability common in earlier fluids. Because of its excellent thermal stability under real world conditions has given it a reputation as the gold standard among Type IV fluids. Skydrol LD-4 features low density, excellent thermal stability, valve erosion prevention, and also deposit control.

Approvals

Meets or Exceeds these Airframe Specifications

• Airbus Industrie NSA307110
• Boeing Commercial Airplane Co. BMS3-11
• McDonnell Douglas Corp. DMS2014
• Lockheed Aircraft Corp. LAC C-34-1224
• Society of Automotive Engineers AS1241
• British Aerospace BAC M.333.B
• Fokker
• Embraer
• Lastly, Bombardier BAMS 564-003

SKYDROL LD-4 Specifications

• Appearance: Clear, purple liquid
• Neutralization number: 0.10 max
• Moisture content (wt.%): 0.20 max
• Finally, Specific gravity, 77°F/77°F: 1.003-1.013

Viscosity in cSt

• at 210°F/99°C: 3.66-4.00
• at -65°F/-54°C: 2000 max.
• Flashpoint, COC, min.: 320°F/160°C
• Refractive Index @ 25°C: 1.443 to 1.451
• at 100°F/38°C: 10.65-11.65
• Lastly, Cleanliness Level: NAS 1638 Class 7 or better