FLUOROLUBE® Greases - PCTFE Fluoropolymer Grease - Flame Resistant Corrosion Resistant
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Regular price
$ 523.86 USD
20 units available
FLUOROLUBE® grease grades are high-performance fluorinated greases engineered for environments where conventional lubricants fail. Designed for use in hazardous, reactive, and high-temperature conditions, this PCTFE fluoropolymer grease delivers long-lasting, stable lubrication for critical systems and components.
Fluorolube® Greases are PCTFE fluoropolymer lubricants designed for severe-service environments where conventional greases can fail, including oxygen-rich, strongly acidic, oxidizing, chemically aggressive, and high-temperature applications.
Each grade is specially formulated to provide long-lasting lubrication for valves, seals, bearings, pumps, oxygen systems, chemical processing equipment, and other critical metallic components exposed to extreme operating conditions.
Unlike ordinary hydrocarbon or silicone greases, Fluorolube greases are based on chlorotrifluoroethylene polymer / PCTFE, are nonflammable, and contain approximately 80% combined fluorine and chlorine, giving them outstanding stability in harsh chemical environments.
As a chemically inert and non-reactive solution, FLUOROLUBE® industrial greases are ideal for applications involving strong oxidizers, oxygen systems, and aggressive chemical exposure. Its non-flammable formulation makes it a trusted flame resistant lubricant in industries where safety and performance are non-negotiable.
Whether used in chemical processing, aerospace systems, or precision equipment, FLUOROLUBE® grease acts as a chemical resistant lubricant that helps prevent failure, reduce maintenance frequency, and maintain system integrity under extreme conditions.
Fluorolube Greases - Typical Properties
| Grade | Penetration (ASTM D-217-82) (0.1 mm @ 77°F) | Dropping Point (ASTM D-2265) | Suggested Minimum Temp | Suggested Maximum Temp |
|---|---|---|---|---|
| GR-290 | 229-249 | 540°F (280°C) | 0°F (-20°C) | 300°F (150°C) |
| GR-362 | 253-273 | 510°F (265°C) | -40°F (-40°C) | 150°F (65°C) |
| GR-470 | 173-193 | 525°F (275°C) | 0°F (-20°C) | 300°F (150°C) |
| GR-544 | 257-277 | 530°F (275°C) | 30°F (0°C) | 300°F (150°C) |
| GR-660 | 198-218 | 575°F (300°C) | 100°F (40°C) | 300°F (150°C) |
Grease viscosity is not measured the same way oil viscosity is measured. Oils are commonly compared by viscosity in cSt, but greases are semi-solid systems, so the more useful published measurement is penetration, which describes the grease’s consistency or stiffness.
For Fluorolube greases, think of performance as a two-layer system:
- Penetration / NLGI consistency - how firm the grease is and how well it stays in place.
- Base oil viscosity - how thick the lubricating film behaves under shear.
That means two greases can feel similar in consistency but perform differently under load because the underlying base oil viscosity is different. Your current page already states this well: Fluorolube greases do not have one single viscosity number; functional viscosity is primarily determined by the base oil grade, increasing from GR-290 through GR-660.
Fluorolube Grease “Viscosity” and NLGI Cross-Reference:
| Grade | Base Oil Equivalent | Base Oil Viscosity @ 37.8°C (100°F) | Relative Base Oil Viscosity | Typical NLGI (est.) | Functional Grease Viscosity Behavior | Typical Use Fit |
|---|---|---|---|---|---|---|
| GR-290 | FS-3 / Oil 27 | ~2–3 cSt | Very low | ~NLGI 1–2 | Extremely mobile; closest to oil-like flow | Precision instruments, very low-temp systems |
| GR-362 | FS-5 / DA-5 | ~5 cSt | Low–medium | NLGI 2 (Medium/Butter-like) | Balanced flow vs stay-in-place | General-purpose valves, seals, oxygen systems |
| GR-375 | FS-8 / S-10 (est.) | ~10–15 cSt | Medium | ~NLGI 2 | Moderate film strength; transitional viscosity grade | Moderate load bearings, chemical processing |
| GR-470 | S-30 / FS-10 | ~30 cSt | Medium–high | NLGI 2 (Medium/Butter-like) | Higher film strength; slower flow | Heavier-duty seals, slow-speed components |
| GR-544 | T-80 | ~80 cSt | High | NLGI 2 (Medium/Butter-like) | Thick under load; strong film retention | Valves, aggressive chemical service, high-load interfaces |
| GR-660 | H-100 | ~500+ cSt | Very high | NLGI 2 (Medium/Butter-like) | Very high resistance to flow; maximum film thickness | Slow-moving, high-load, extreme sealing applications |
| LG-160 | Low Temp Blend | Ultra-low (<2 cSt) | Very low | NLGI 0–1 (Soft/Semi-fluid) | Extremely flowable; optimized for low-temp performance | Cryogenic systems, very low-temp valves |
Fluorolube Greases - Key Performance Advantages
| Performance Feature | Why It Matters |
|---|---|
| PCTFE fluoropolymer chemistry | Helps provide stability in strongly acidic and oxidizing environments |
| Nonflammable formulation | Useful in oxygen-rich and hazardous-service applications |
| High combined fluorine/chlorine content | Greases consist of about 80% combined fluorine and chlorine |
| High dropping points | Listed dropping points range from 510°F to 575°F depending on grade |
| Controlled consistency range | Penetration data helps customers compare stiffness and stay-in-place behavior |
| Wide grade range | Grades allow users to balance low-temperature mobility, film strength, sealing, and load support |
Fluorolube Grease Selection Guide
| Application Need | Recommended Grade(s) | Why |
|---|---|---|
| Lowest-temperature grease option | GR-362 | Lowest listed minimum application temperature: -40°F (-40°C) |
| General chemical-resistant grease | GR-362 / GR-470 | Balanced consistency and practical operating range |
| Higher film strength | GR-470 / GR-544 | Better suited where slower movement or higher load requires stronger film retention |
| High-load or sealing applications | GR-544 / GR-660 | Higher relative base oil viscosity and stronger stay-in-place behavior |
| Very high-temperature margin by dropping point | GR-660 | Highest listed dropping point: 575°F (300°C) |
| Oxygen / oxidizing environments | Grade selection depends on temp/load | Fluorolube greases are commonly used in oxidizing environments and are nonflammable, but grade should match temperature and mechanical load |
Additional Information
IMPORTANT: If you (or your Customer needs the grease viscosity, here's how to help them.
Fluorolube greases don’t have a single viscosity number. They are all similar in consistency (around NLGI 2), and the functional viscosity is determined by the base oil grade, which increases from GR-290 up to GR-660.
For Greases, viscosity is not an accurate measurement. Penetration and base oil viscosity are better.
- Penetration measures consistency / stiffness, not flow behavior
- Two greases can have:
- same NLGI
- wildly different functional viscosity
For Fluorolube greases, viscosity is a 2-layer system
-
Structure (NLGI ~2 across grades)
- Controls: stay-in-place behavior
-
Base oil viscosity (primary differentiator)
- Controls: lubrication under shear
Applications & Good Uses?
Fluorolube greases are especially useful in applications where conventional lubricants may oxidize, evaporate, react, or lose film strength.
- chemical processing
- cryogenic gases
- electrical applications
- hydraulic uses
- instrumentation uses
- laboratory apparatus
- life support systems
- mechanical seals
- pulp and paper
- steel industry
- vacuum pump assemblies
- oxygen services
- chemically aggressive environments
Practical Ranking (what actually matters in the field)
From lowest → highest effective viscosity:
GR-290 < GR-362 < GR-375 < GR-470 < GR-544 < GR-660
Application Mapping (useful for picking the right grade)
-
Low 'viscosity' (GR-290 / 362)
- Fast-moving parts
- Low torque systems
- Precision valves
-
Mid range (GR-375 / 470)
- General industrial
- Seals + moderate load
-
High viscosity (GR-544 / 660)
- Slow-moving
- High load
- Aggressive chemical + sealing environments
Compatibility and Caution Information
Important use restrictions: Do not use Fluorolube greases where aluminum or magnesium parts experience heavy friction, galling, confined spaces, high loads, or high pressure exposure. Detonation can occur under those conditions.
Fluorolube lubricants may also react violently with sodium, potassium, amines, hydrazine, liquid fluorine, and liquid chlorine trifluoride. For greases specifically, gaseous fluorine, hydrofluoric acid, and caustic solutions are not recommended because they can attack the thickening agent.
FAQ's
Are Fluorolube greases PCTFE or CTFE?
Fluorolube greases are best described as PCTFE fluoropolymer greases. CTFE is the monomer; PCTFE, or polychlorotrifluoroethylene, is the polymer lubricant chemistry. The TDS describes the material as “chlorotrifluoroethylene polymer.”
What is the viscosity of Fluorolube grease?
Fluorolube greases do not have a single oil-like viscosity value. Grease selection should be based on penetration / consistency, operating temperature, and the approximate base oil viscosity that drives functional film behavior under shear.
Which Fluorolube grease has the best low-temperature performance?
Based on the TDS suggested application temperature range, GR-362 has the lowest listed minimum application temperature at -40°F (-40°C).
Which Fluorolube grease has the highest dropping point?
GR-660 has the highest listed dropping point at 575°F (300°C).