Caldera 7 – Technical Data Sheet (TDS)
Last Updated: September 2018 Caldera 7 is a premium silicone heat transfer fluid manufactured by Isel Inc. It is formulated with advanced additives to deliver exceptional thermal stability, oxidation resistance, and long-term performance in high-temperature applications. Caldera 7 is compatible with most silicone-based heat transfer fluids and can be mixed at any ratio without issue.
Link to Technical Data Sheet (PDF)
Quick Facts
- Product Name: Caldera 7
- Type: Synthetic Silicone Heat Transfer Fluid
- Supplier: Isel Inc.
- Address: 5266 Highway Avenue, Jacksonville, FL 32254
- Phone: 904-378-3232 | Toll-Free: 1-800-503-9533
- Email: sales@iselinc.com
- Website: www.calderafluids.com
- Country of Manufacture: USA
Applications
- Open-bath systems
- Closed-loop systems with a maximum bulk temperature of 601°F (316°C)
- Open-loop systems with a maximum bulk temperature of 400°F (204°C)
Performance Advantages
- Ideal for open-bath systems
- Impervious to oxidation
- Resistant to premature fluid degradation
- Provides protection against wear, rust, and corrosion
- Fully compatible with other silicone-based fluids
Product Description
Caldera 7 is engineered for superior thermal performance and long service life. It remains stable at high film temperatures up to 691°F (366°C), making it suitable for the most demanding industrial heat transfer applications. Its silicone formulation ensures low volatility, consistent viscosity, and reliable heat transfer efficiency over extended use.
Temperature Range
- Minimum Operating Temperature: –63°F (–53°C)
- Maximum Film Temperature: 691°F (366°C)
- Maximum Bulk Temperature (Closed Systems): 601°F (316°C)
- Maximum Bulk Temperature (Open Systems): 400°F (204°C)
Typical Properties
- Pour Point: –87°F (–66°C)
- Flash Point: 615°F (324°C)
- Fire Point: 637°F (336°C)
- Autoignition Point: 819°F (437°C)
- Thermal Expansion Coefficient: 0.0583 %/°F
- Thermal Conductivity @ 100°F: 0.0769 BTU/h-ft-°F
- Thermal Conductivity @ 500°F: 0.0584 BTU/h-ft-°F
- Heat Capacity @ 100°F: 0.409 BTU/lb-°F
- Heat Capacity @ 500°F: 0.510 BTU/lb-°F
- Distillation Range (ASTM D2887, 10%): 921°F
- Distillation Range (ASTM D2887, 90%): 1254°F
Thermal Stability
Caldera 7’s high flash and fire points provide enhanced safety margins and oxidation resistance compared to conventional heat transfer fluids. Its stable chemical structure prevents coking, sludge formation, and viscosity changes over prolonged service intervals.
Compatibility
- Mixes safely with other silicone-based heat transfer fluids
- Compatible with most system materials including carbon steel, stainless steel, and common elastomers
- Not recommended for use with strong oxidizers or concentrated acids
Storage & Handling
- Store in a cool, dry, and well-ventilated area away from heat sources.
- Keep containers tightly closed when not in use.
- Use standard PPE such as gloves and safety glasses during handling.
- Avoid contamination with water or foreign materials.
Environmental & Safety Information
- Caldera 7 is not classified as hazardous under OSHA or GHS regulations.
- It is non-toxic, non-corrosive, and biodegradable over time.
- Dispose of used fluid in accordance with local, state, and federal regulations.