Fluorolube FS-5 – PCTFE Fluoropolymer Oil

Description

Fluorolube FS-5 is the lowest-viscosity oil in the Fluorolube PCTFE fluoropolymer family, engineered for cryogenic and low-temperature service. Density 1.868 g/cc, pour point -75°F. Nonflammable, oxygen-compatible, chemically inert to strong oxidizers, acids, and halogens.

FS-5 Benefits

• Lowest viscosity in the Fluorolube oil line (6 cSt @ 100°F)
• Excellent low-temperature flow below -60°C
• Nonflammable PCTFE chemistry safe for oxygen service
• Stable in strongly oxidizing and acidic chemical environments
• Low vapor pressure for vacuum and clean-room use
• ~80% combined fluorine and chlorine content
• High density gives strong film persistence and reduced volatility

Common Applications

• Cryogenic systems and compressed-gas service
• Precision instrument and metrology fluids
• Vacuum pump fluids
• Oxygen service (LOX, GOX) systems
• Semiconductor and plasma-etch processing
• Dielectric and instrumentation fill fluids
• Index-matching and damping applications

Typical Properties

Selection Notes

FS-5 is the cold-flow specialist of the Fluorolube oil family. For general-purpose lubrication at room temperature and above, look at MO-10 or S-30. For thicker oils and seal/damping applications, T-80, HO-125, or LG-160 carry stronger film at the cost of low-temperature mobility.

Use Restrictions

Do not use with aluminum or magnesium parts under heavy friction, galling, confined spaces, or high pressure. Detonation risk. Avoid contact with sodium, potassium, amines, hydrazine, liquid fluorine, and liquid chlorine trifluoride.

Ordering and Support

Available in 1 lb, 4 lb, 16 lb, 80 lb, and 2 oz sample sizes. For technical questions, MSDS / TDS, or bulk quotes, call 248-588-2270 or email [email protected]. Browse the full Lubricants category for related Fluorolube grades.