Methyl phenyl silicone oil

Methylphenyl silicone oil, CAS 63148-58-3, a crystal-clear, heat-stable fluid that remains pourable down to –70 °C and withstands continuous service at 250 °C.
Its superior thermal-oxidative and dielectric properties make it the preferred choice for high-temperature lubrication, electronic potting, and ultra-high-vacuum diffusion pumps.
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Product Introduction

Technical Specifications:


Appearance

Kinematic viscosity

25℃,mm²/s

flash point

℃,>

Refractive index

25℃

JN250-30Colorless /light yellow liquid25-40240℃1.4700-1.4800
JN250-75Colorless /light yellow liquid50-100280℃1.4800-1.4950
JN255-150Colorless /light yellow liquid100-200300℃1.4800-1.4950
JN255-500Colorless /light yellow liquid480-520300℃1.4850-1.5100
JN274Colorless /light yellow liquid37-44210℃1.5520-1.5580
JN275Colorless /light yellow liquid165-185243℃1.5765-1.5785
JN272Colorless /light yellow liquid35-50190℃1.5400-1.5580


Performance and characteristics:

  1. Wide service temperature: –50 °C to 250 °C continuous, brief peaks to 300 °C

  2. Excellent thermal-oxidative stability; minimal viscosity change after thousands of hours at 250 °C

  3. Very low pour point (–70 °C for low-phenyl grades) ensures fluidity in extreme cold

  4. Outstanding lubricity above 200 °C, outperforming standard methyl silicones

  5. High dielectric strength and volume resistivity; effective electrical insulator and damping fluid

  6. Radiation-resistant (stable to ~2×10⁸ R) and chemically inert to most metals and plastics

  7. Refractive index 1.47–1.48, high light transmission for optical uses

  8. Low volatility, high flash point (>240 °C), essentially odorless and non-toxic


Main Applications:

  1. The electrical and electronic industries use it in the vacuum systems for metallization of television tubes, fluorescent tubes, cathode ray tubes, ordinary light bulbs and capacitors, and rectifiers.

  2. The vacuum systems used in the production equipment of ultrapure silicon in the metallurgical industry, vacuum melting plants and vacuum smelting plants, and metal degassing equipment.

  3. The optical products industry uses it in the vacuum systems used for surface treatment of optical systems such as various lenses and vacuum coating of various mirrors.

  4. The plastics industry uses it in the metallization of plastic products, the preparation of protective coatings and reflective coatings.

  5. Other industries use it in particle accelerators, molecular distillers, reactors, scientific research equipment for nuclear engineering, mass spectrometers, and space simulation chambers.

  6. Other high-temperature heat carriers and transfer fluids that can be used in various equipment and instruments, etc.


Packaging and storage:

  • 25L/200L plastic barrel/plastic-lined iron barrel packaging, net weight 20KG/200KG. Please contact the company for special specifications.

  • Store in a cool, ventilated warehouse. Keep away from fire and heat sources.The packaging must be sealed.

  • It should be stored separately from oxidants, acids, and edible chemical raw materials. The lighting, ventilation and other facilities in the storage room should be explosion-proof.

  • Load and unload gently during transportation to prevent damage to the packaging and containers, and transport as non-dangerous goods.


JN Main Work And Services:

Our main work and services: Silicone oil | Silicone grease | Waterproofing agent | Defoaming agent | LSR Liquid silicone rubber. To ensure the provision of sustainable and quality services to our customers, we will continuously strive to improve our standards on manufacturing standard and product quality management. Most of our silicone rubber materials are complied with RoHS, REACH, FDA, LFGB and certificate ISO 9003: 2016 is implemented for each OEM/ODM production and service, thus saving time and any unnecessary trouble, and contribute to our innovative strength; as a result of fast order delivery and quality guarantee. The products of our group brings innovation to a wide range of industries and applications, including automotive, electronics, power transmission and distribution, personal care, consumer products, aerospace, medical & healthcare, building and construction etc.

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