86-0571-86220050
sales@lanchemie.com
Contact Us
Global
LANCHEMIE INDUSTRY CO., LIMITED.
LANCHEMIE INDUSTRY CO., LIMITED.

LANCHEMIE Silicone Diffusion Pump Oil offers exceptional thermal stability, low vapor pressure, and high oxidation resistance, ensuring stable ultra-high vacuum environments. It features low volatility, non-toxicity, and long service life, effectively reducing maintenance frequency. With excellent anti-cracking and anti-pollution properties, it is widely used in electronics, metallurgy, aerospace, and coating industries. Backed by strict quality control and stable bulk supply, LANCHEMIE guarantees reliable performance for high-vacuum systems worldwide.

High-Performance Silicone Diffusion Pump Oil Series

Product Code Desription CAS NO TDS
LC-274 LC-274 is a ultra-high vacuum diffusion pump silicone oil composed of 1,1,5,5-Traphenyltetramethyltrisiloxane 3982-82-9
LC-275 LC-275 is a ultra-high vacuum diffusion pump silicone oil composed of 1,1,3,5,5-Pentaphenyl-1,3,5-trimethyltrisiloxane 3390-61-2
Products

How Silicon Diffusion Pump Oils Used in the Field of Vacuum Pumps

How Silicon Diffusion Pump Oils Used in the Field of Vacuum Pumps

  • Serves as high-performance working fluid for diffusion pumps.

  • Delivers ultra-low vapor pressure & excellent thermal stability.

  • Creates clean, high/ultra-high vacuum environments efficiently.

  • Resists oxidation & degradation, extending service life.

  • Minimizes backstreaming and contamination.

  • Widely used in vacuum coating, electronics, metallurgy, and aerospace. Reliable, low-maintenance, and consistent for industrial vacuum systems.

Production & Purification Process of Silicone Diffusion Pump Oils

Production & Purification Process of Silicone Diffusion Pump Oils

LANCHEMIE Silicone Diffusion Pump Oil is produced through hydrolysis, polycondensation, neutralization, dehydration, and high-vacuum distillation. Methylphenyl and dimethyl siloxane monomers react under controlled conditions to form linear polysiloxanes. Low boilers, solvents, and residual catalysts are removed step by step.


To improve purity: use high-purity raw materials, apply multi-stage molecular distillation under ultra-high vacuum (<0.1 Pa), adopt activated adsorption and fine filtration, and maintain inert nitrogen protection throughout processing. These steps effectively reduce volatile impurities, metal ions, and byproducts, ensuring ultra-low vapor pressure, high thermal stability, and long service life for high-end vacuum applications.

Need High-Performance Silicone Raw Materials？
GET YOUR FREE CONSULTATION
Catch Up with LANCHEMIE Silicone Raw Materials
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. Part of the tracking is necessary to ensure SEO effectiveness,
By using this site, you agree to our use of cookies. Visit our cookie policy to learn more.
Reject Accept