| Maximum Bulk Temp. (Closed System) | 315°C | 600°F |
| Maximum Bulk Temp. (Open System) | 204°C | 400°F |
| Maximum Film Temp. | 365°C | 690°F |
| Pour Point ASTM D97 | -66°C | -87°F |
RELATHERM S-1 Silicone Heat Transfer Fluid
No oxidation! No gunk!! This engineered thermal fluid is formulated for absolute resistance to fluid degradation. In a class of its own, it boasts of premium performance, extended life, and extreme stability in a variety of demanding applications.
PRODUCT SUMMARY
- Oxidation-proof thermal fluid great for open baths and other aerated systems
- Maximum use temperature: 315ºC / 600°F in closed systems and 204ºC / 400°F*
- Great chiller/cooling fluid down to -51°C (-60°F)
- Non-toxic and non-hazardous thermal fluid
*In open systems operating above 204ºC / 400°F, gel formation is known to occur due to a polymerization reaction. As such, for open systems, operating temperature should not exceed the recommended temperature.
Technical Documents
Thermal Properties
| Thermal Expansion Coefficient | 0.105 %/°C | 0.055 %/°F |
| Thermal Conductivity | W/m K | BTU/hr F ft |
| -17°C / 0°F | 0.142 | 0.082 |
| 38°C / 100°F | 0.134 | 0.077 |
| 148°C / 300°F | 0.118 | 0.068 |
| 260°C / 500°F | 0.101 | 0.058 |
| 316°C / 600°F | 0.093 | 0.054 |
| Heat Capacity | kJ/kg K | BTU/lb F |
| -17°C / 0°F | 1.611 | 0.385 |
| 38°C / 100°F | 1.714 | 0.410 |
| 148°C / 300°F | 1.921 | 0.461 |
| 260°C / 500°F | 2.137 | 0.512 |
| 316°C / 600°F | 2.246 | 0.537 |
Safety Data
| Flash Point ASTM D92 | 323°C | 615°F |
| Fire Point ASTM D92 | 335°C | 636°F |
| Autoignition ASTM E-659-78 | 436°C | 818°F |
Physical Properties
| Viscosity ASTM D445 | ||
| cSt at -51°C / -60°F | 299.88 | |
| cSt at -18°C / 0°F | 113.08 | |
| cSt at 40°C / 104°F | 36.13 | |
| cSt at 149°C / 300°F | 10.57 | |
| cSt at 260°C / 500°F | 5.19 | |
| cSt at 316°C / 600°F | 4.03 | |
| Density ASTM D1298 | kg/m3 | lb/ft3 |
| 38°C / 100°F | 0.9486 | 59.23 |
| 260°C / 500°F | 0.7668 | 47.88 |
| 316°C / 600°F | 0.7209 | 45.01 |
| Vapor Pressure ASTM D2879 | kPa | psi |
| 38°C / 100°F | 0.00 | 0.00 |
| 260°C / 500°F | 1.83 | 0.26 |
| 316°C / 600°F | 7.21 | 0.99 |
| Distillation Range ASTM D2887 | 10% | 494°C (922°F) |
| 90% | 679°C (1255°F) |
Additional Information
WHY RELATHERM S-1?
Relatherm S-1 is the result of extensive thermofluid research into effective non-fouling options for open systems. It is manufactured from a blend of high purity Silicone fluids and proprietary additives that ensure that sludge formation and coke deposition do not occur. Relatherm S-1 is thermally stable, even at elevated temperatures. In comparison with other industry fluids, it provides for an oxidation-free, less odorous, safer, cleaner, and trouble-free operation.
EXTENDED FLUID LIFE
Relatherm S-1 is often selected for its durability and oxidative-stability in typically problematic systems such as open baths. Its base chemistry is non-susceptible to oxidation. As such, Relatherm S-1 has a service life much longer than most thermal fluids in exposed systems.
NO OXIDATION! NO GUNK!!
Relatherm S-1 is fully resistant to oxidation in open and non-airtight systems. By virtue of its uniquely stable chemistry, it is non-susceptible to oxidative reaction mechanisms. This translates into the absence of sludge and carbon deposits. When used within the specified operating range, Relatherm S-1 provides lower maintenance costs, longer uptime and less frequent fluid changeouts.
Relatherm S-1 is non-toxic and non-hazardous. It is environmentally friendly and poses no adverse effect to personnel safety. There are no special handling procedures for fluid disposal. After its long-service life, it can be disposed with other waste oils/lubricants in accordance with applicable statutes.
COMPREHENSIVE PRODUCT PORTFOLIO
If Relatherm S-1 does not meet your application requirements, there is a very good chance that we will be able to offer a better suited solution from our comprehensive portfolio of thermal fluids and system cleaners. Contact us to discuss your application with a Thermal Fluids Expert.