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High Vacuum Lubricants, Mechanical Pump Fluid, Diffusion Pump Oil Octoil

Mechanical Pump Fluid "OL Series"

OL Series mechanical pump fluid is a distilled hydrocarbon fluid developed for all types of mechanical vacuum pumps. This fluid performs especially well in direct drive pumps. It has excellent resistance to oxidation and gum formation.

SPECIFICATIONS
Vapor Pressure 8 x 10-5 Torr
Pour Point 4.5°F
Flash Point 450°F
Viscosity @ 100°F 47.7
Viscosity @ 130°F 23.6
Viscosity @ 210°F 6.5
Specific Gravity 25°C/25°C .869

 

OL Series Ordering Information

PART NUMBER DESCRIPTION
OL-1 1 Quart
OL-2 1 Gallon
OL-3 5 Gallons
OL-4 55 Gallons

 

Octoil Diffusion Pump Fluid (Molecularly Distilled Synthetic Ester)

Octoil is a highly distilled synthetic ester fluid designed for use in diffusion pumps where pressures of 10-7 torr are required. It has become a standard fluid in diffusion pump leak detectors and mass spectrometers.

SPECIFICATIONS
Color Clear
Viscosity @ 40°C 52cST
Specific Gravity 0.913
Flash Point (COC) 288°C / 550°F
Flash Point 209°C / 409°F
Fire Point 248°C / 248°F
Boiling Point °C @ .01 torr 141
Ultimate Vacuum, torr untrapped 3 x 10-7
Ultimate Vacuum, torr trapped 5 x 10-8

 

OCTOIL series Ordering Information

PART NUMBER DESCRIPTION
OCTOIL-100 100 cc
OCTOIL-500 500 cc
OCTOIL-1 1 gallon

Product information is subject to change without notice. Product images may include options or accessories not included with the base model.

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For 50 years, Key High Vacuum Products, Inc. has been a trusted leader in precision-engineered stainless steel high vacuum weldments. With tens of thousands of unique weldments in use—from particle accelerators to industrial leak detectors—our expertise is proven across industries. Rooted in innovation, craftsmanship, and an unwavering commitment to customer satisfaction, we deliver high-quality, customized solutions that drive success. Every day, our team brings a unique blend of passion and precision, ensuring your goals are met with excellence—because your mission matters. Experience the Key High difference.
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