Description
Fluorolube GR-660 is the heaviest PCTFE fluoropolymer grease in the Fluorolube line. NLGI 2 consistency with H-100 base oil equivalent (~500+ cSt) for maximum film thickness and load-bearing capacity. Highest dropping point in the line at 575°F (300°C). Nonflammable, oxygen-compatible.
GR-660 Benefits
- Highest dropping point in the Fluorolube grease line: 575°F (300°C)
- Very high base oil viscosity (~500+ cSt) for maximum film thickness
- Maximum stay-in-place behavior for slow-moving high-load applications
- Nonflammable PCTFE chemistry safe for oxygen service
- Stable in strongly oxidizing and acidic environments
- ~80% combined fluorine and chlorine content
Common Applications
- Slow-moving high-load bearings and components
- Extreme sealing environments
- Aggressive chemical service with high film demand
- Oxygen service systems
- High-temperature valve sealing
Typical Properties
| Property | Value |
|---|---|
| Penetration (ASTM D-217-82) | 198-218 |
| Dropping Point (ASTM D-2265) | 575°F / 300°C |
| Suggested Temp Range | 100°F to 300°F |
| Base Oil Equivalent | H-100 (~500+ cSt @ 100°F) |
| NLGI Grade | 2 (Medium / Butter-like) |
Selection Notes
GR-660 is the highest-viscosity / highest-dropping-point grease in the Fluorolube line. For lower viscosity and faster-moving parts, see GR-362 or GR-375. GR-660’s minimum service temperature (100°F) is higher than the other grease grades, so it’s not suited for sub-room-temperature applications.
Use Restrictions
Do not use with aluminum or magnesium parts under heavy friction. Avoid contact with sodium, potassium, amines, hydrazine, liquid fluorine, and chlorine trifluoride.
Ordering and Support
Available in 1 lb and 2 oz sample sizes. For quotes, call 248-588-2270 or email [email protected].
Reviews
There are no reviews yet.