Description:
Hydraunycoil FH 19 is a petroleum-based hydraulic fluid with a high viscosity index of over 350 and a viscosity of 25 cSt at 40°C. It has mild anti-rust properties and is suitable for use in air-tight circuits across a wide temperature range from -35°C to +135°C.

Applications:
This fluid is primarily used in ordnance equipment, including recoil systems and hydraulic systems for rotating weapons or aiming devices on Navy vessels.

Specifications and Characteristics:

• Appearance: Limpid
• Color: Max 0.5 (ASTM D 1500)
• Density at 20°C: 0.880 kg/dm³ (ASTM D 4052)
• Kinematic Viscosity:
  • 100°C: 8.97 mm²/s (min. 8.00)
  • 40°C: 26.3 mm²/s (min. 25.0)
  • -20°C: 296 mm²/s (max. 500)
  • -35°C: 863 mm²/s (max. 1000)
• Stability: Passes 72h at -37°C (MIL-DTL-17111)
• Flash Point: 108°C (min. 104°C, ASTM D 92)
• Fire Point: 115°C (min. 113°C, ASTM D 92)
• Pour Point: -60°C (max. -40°C, ASTM D 97)
• Total Acid Number: 0.03 mg KOH/g (max. 0.30, ASTM D 974)
• Evaporation Loss: 10.0% w (max. 15, ASTM D 972)
• Precipitation Number: 0.01 (max. 0.05, ASTM D 91)
• Steel-on-Steel Wear: 0.73 mm (max. 1.0, ASTM D 4172)
• Oxidation Test:
  • KV100°C change: 0.2%
  • KV-20°C change: 8.3%
  • Acid number change: 0.02 mg KOH/g
  • Acid number change of water layer: 0.1 mg KOH/g
• Barium Content: 34 mg/kg (ASTM D 5185)
• Calcium and Zinc Content: 0 mg/kg
• Corrosion Test: Pass, no corrosion (ASTM D 665A)
• Water Content: 0.0% (50 mg/kg, ASTM D 1533)

Notes:
The values provided are typical and do not constitute a contractual commitment. Sales specifications are available upon request.