Phenyl Silicone Fluid BL-255 | High Temperature Resistant Silicone Fluid
Core Keywords: Phenyl Silicone Fluid, Phenyl Methyl Silicone Fluid, High Temperature Silicone Fluid, Heat Transfer Silicone Fluid, Electrical Insulation Silicone Fluid, BL-250 Phenyl Silicone Fluid, DC 550 Equivalent, DC 710 Equivalent
Synonyms: Phenyl methyl silicone fluid, Phenylmethyl polysiloxane and Dimethyl polysiloxane, Dimethylsiloxane methylphenylsiloxane copolymer, Methyl Phenyl Silicone Oil
Equivalent Products: DC 510, DC 550, DC 710, KF53. It is a direct replacement for these premium brands, offering the same high performance at a more cost-effective price point, ideal for businesses seeking reliable alternatives to top-tier silicone fluids.
Technical Index of Phenyl Silicone Fluid BL-255
Property | BL-255-125 (Dow Corning 550 Equivalent) | BL-255-500 (Dow Corning 710 Equivalent) |
Equivalent brand | DC550 | DC710 |
Appearance | Colorless transparent or light yellow transparent liquid | Colorless transparent or light yellow transparent liquid |
Viscosity(25°C, mm2/s) | 125 | 500 |
Specific Gravity at 25°C | 1.07~1.10 | 1.09~1.12 |
Refractive index (25°C) | 1.4900-1.5000 | 1.4900-1.5000 |
Flashing point,°C | ≥308 | ≥302 |
Pour point,°C | -50 | -22 |
Volatility 250°C/4Hours, % | ≤2.0% | ≤2% |
Key Characteristics
BL-255 is a high-performance straight-chained Polyphenylmethylsiloxane, where part of the methyl groups are replaced by phenyl groups— a modification that enhances its overall performance compared to standard dimethyl silicone fluid. It delivers exceptional performance in extreme high and low temperature environments (-40 ~ 300°C), making it a top choice for industrial applications requiring stability under harsh conditions.
Compared to traditional dimethyl silicone fluids, it offers superior lubricity, mold release properties, and electrical insulation performance— critical for industrial machinery, electronics, and precision instruments. It features a small temperature-viscosity coefficient and low volatility, ensuring consistent performance even during long-term use at high temperatures. Additionally, it boasts a high compression rate and surface tension, along with excellent miscibility with other organic resins, expanding its versatility across various industries. Its unique UV-resistant properties also make it suitable for outdoor or light-exposed applications[4].
- Superior Heat Resistance: Maintains stable performance in temperatures ranging from -40°C to 300°C, with high thermal stability and oxidation resistance even at 250°C and above[5].
- High Flash Points: Flash points of ≥302°C (BL-250-500) and ≥308°C (BL-250-125) ensure safe use in high-temperature industrial environments.
- Low Volatility: Volatility ≤2.0% at 250°C for 4 hours, reducing fluid loss and maintaining consistent performance over time.
- Excellent Compatibility: Good miscibility with other organic resins, making it easy to integrate into existing production processes.
- Strong Electrical Insulation: Ideal for electronic applications that require reliable insulation performance, such as capacitors and transformers.
Applications
It is a versatile high-temperature silicone fluid, widely used in industrial lubrication, heat transfer, and thermostat systems. Its unique combination of properties makes it suitable for a range of demanding applications, replacing premium brands like DC 550 and 710 with cost-effective reliability.
As a High-Temperature Lubricant
- Base oil for high-temperature ball bearing greases, ensuring smooth operation of industrial machinery in high-heat environments.
- Lubricating oil for high-temperature instruments, protecting precision equipment from wear and tear while maintaining performance at extreme temperatures.
As a Heat Transfer Medium
- Heat-treating baths for specialty metals, providing consistent heat distribution for high-quality metal processing.
- Heat exchange fluid for research apparatus and instrument calibration baths, ensuring accurate temperature control for scientific experiments.
- Heat transfer oil in capacitors, transformers, and various electronics, effectively dissipating heat to protect sensitive components and extend service life.
As a Thermostat Fluid
- Suitable for thermostat systems operating at temperatures from -40°C to 315°C, requiring a clean, stable fluid to maintain precise temperature control.
Packaging
To ensure safe storage and transportation, it is available in the following packaging options, suitable for both small-scale and large-scale industrial use:
- 25KG plastic drum
- 50KG plastic drum
- 200KG Iron Drum
It is a cost-effective alternative to Dow Corning 510, 550, 710, and Shin-Estu KF53, offering the same high performance and reliability. Its exceptional heat resistance, low volatility, and electrical insulation make it the ideal choice for industrial applications requiring stable performance in extreme conditions.
