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Kurt J. Lesker Company | Mechanical Vacuum Pump Oil | Enabling Technology for a Better World

Mechanical Vacuum Pump Oil

Chemically inert, nonflammable pumping oils with a working temperature range of -100ºC to 290ºC.

Exclusive KJLC Semi-Synthetic oil with an anti-oxidation additive, high viscosity index, and wide, workable temperature range.

A light end hydrocarbon fluid used to clean and remove contaminants between standard oil changes

Chemically inert solvent compatible and recommended for use with Fomblin PFPE oils.

The Kurt J Lesker Company® exclusively distributes and stocks Fomblin® (PFPE) inert fluids for mechanical vacuum pumps, silicone fluids for diffusion pumps, and Santovac® for the lowest ultimate vacuums using diffusion pumps. We supply the popular Apiezon® hydrocarbon greases and vacuum lubricant and, in addition, DuPont MOLYKOTE® High-Vacuum Grease and Klüber inert greases. For vacuum sealing, we offer epoxy-based and silicone-based materials. We are also the exclusive distributor of Galden® heat transfer fluids for closed loop chiller systems.

For almost 40 years we have manufactured hydrocarbon vacuum pump fluids of all grades and viscosities. Our KJLSS semi-synthetic hydrocarbon vacuum pump oil offers superior chemical stability, superior performance, and contains an anti-oxidation additive which extends the useful life of the oil. With its low vapor pressure this oil is an ideal choice for a variety of applications. KJLSS is a semi-synthetic oil with a high viscosity index, which makes it much more energy efficient than many other vacuum pump oils. It has the added benefit of being able to withstand higher operating temperatures. This new oil is available in four different types, with varying viscosities.

All fluids, vacuum greases, and sealants can be purchased online.

For a listing of Frequently Asked Questions (FAQs) about Fluids & Greases please see this link: Fluids & Greases FAQ.