Features and Benefits
Strong chemistry enables strong performance. DuraClear Crystal 7 is a perfluoropolyether (PFPE) based fully synthetic oil. Comprised of fully bonded oxygen, fluorine and carbon atoms, this extremely stable molecule is equally extremely inert.
- Nontoxic
- Nonreactive
- Nonoxidizing
- Colorless
- Odorless
- Nonflammable
- Does not degrade with use or temperature
- Does not coke or crystallize
- Environmentally friendly
- Food grade
Compatible with all seal face materials
- Carbons
- Silicon Carbides
- Tungsten Carbides
DuraClear Crystal 7 is a Perfluoropolyether (PFPE) based oil which offers several benefits over ISO 7 grade CTFE fluids:
- Better compatibility with Lewis acids
- Better lubrication capability (lower seal face wear)
- More thermally stable
- No corrosive Chlorine in molecular chain
- Flatter viscosity curve vs temperature
Specifications
NSF61
ISO grade of oil: 7
Viscosity ASTM D445
- 16 cSt at 20°C (68°F)
- 8 cSt at 40°C (104°F)
- 2 cSt at 100°C (212°F)
Pour Point: <-70°C (<-94°F)
Density g/ml
- 1.89 at 0°C (32°F)
- 1.70 at 100°C (212°F)
Recommended process fluid temperature range: -60 to 204C / -76 to 400F
Barrier fluid operating range: -40 to 130C / -40 to 266F
Optimal barrier fluid operating range: 20 to 100C / 68 to 212F
