
SantoLight
Chemically inert, low-viscosity optical-grade fluids for sensitive optical assemblies.
Products
Seven PPE-based product families engineered for the operating conditions where conventional mineral and PAO lubricants fail — extreme temperature, ultra-high vacuum, radiation exposure, and demanding traction environments.
Engineered for Extreme Conditions
Custom Formulated Solutions
ISO 9001:2015 Certified
Every SantoLubes product family shares a common foundation: advanced polyphenyl ether base chemistry, formulated and manufactured under ISO 9001:2015 quality management at our Spartanburg, South Carolina facility. That chemistry is what delivers thermal stability to 450°C (840°F), vacuum performance down to 5×10-10 torr, and chemical and radiation resistance that conventional fluids can’t match.
Each product family below is engineered for a distinct performance requirement — vacuum, traction, base oil viscosity, connector protection, optical clarity, radiation resistance, or PFAS-free compliance. Not sure which fits your application? Our applications engineers will review your operating conditions and recommend the right grade at no obligation.

Chemically inert, low-viscosity optical-grade fluids for sensitive optical assemblies.

Specialty synthetic fluids formulated for stability in high-radiation environments.

Anticorrosion connector lubricants that protect electrical contacts from corrosion and fretting.

High-vacuum pump fluids for maximum pump life and low volatility performance.

Advanced traction drive fluids built for high load and extreme conditions.

Ultra-low EHD shear synthetic base oils for superior efficiency and thermal stability.
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