Halocarbon® 25-5S is a premium-quality silica-thickened PCTFE grease for a medium-viscosity, thick-bodied fluid suitable for a broad service temperature range. It offers excellent lubricity and low compressibility in valves, regulators, assembly lube, and thread sealant applications.
Appearance: Grease
Color: Off-white
pH: Neutral
NLGI: 3
ASTM penetration: 220 to 250
Service temperature, °C: -20 to 175
Melting point, °C: >200
Density, g/mL @ 38°C: 1.9
Water solubility: Negligible
Decomposition temperature, °C: >200
Kinematic viscosity @ 40°C, cSt: >200
CAS No 9002-83-9;
Primary Chemistry:
Halocarbon® 25-5S is a premium-quality silica-thickened PCTFE grease for a medium-viscosity, thick-bodied fluid suitable for a broad service temperature range.
Halocarbon® 25-5S is a medium-viscosity, polychlorotrifluoroethylene (PCTFE)-based lubricating grease thickened with silica and engineered for demanding reactive-gas and industrial lubrication applications. Formulated as part of Halocarbons reactive gas lubricants, this thick-bodied grease is chemically inert and nonhazardous for reactive gas applications. It offers wide material compatibility with most plastics, metals, and elastomers. It exhibits a medium viscosity with an NLGI grade of 2 to 3, delivering excellent lubricity, low compressibility, and high thermal stability across a wide service temperature range.
All Halocarbon® oils are also available with anticorrosion additives upon request at no extra charge.
Thermal stress and fluid degradation in high-temperature conditions
High volatility of traditional fluids such as hydrocarbons, silicones, etc.
Poor safety properties of other lubricants and fluids containing hazardous ingredients
Poor material compatibility of fluids with plastics, polymers, metals, or elastomers
Reduced operational efficiency from the chemical breakdown of fluids
Rust or corrosion of equipment parts
Breakdown of lubricants and fluids in reactive chemical systems
Hazardous reactions in oxygen, chlorine, or other reactive gases
Assembly lubricant
Thread sealant fluid
Valve fluid
Regulator fluid
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