DuPont Molykote High Vacuum Grease
SKU Description Quantity Price Add to Cart
DOWDUPONTGREASE53OZ DowDupont MOLYKOTE 5.3 Oz High Vacuum Grease 1 Each $43
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DuPont Molykote (formerly Dow) High-Vacuum Grease is a one component, non-melting silicone oil that is used for sealing and lubricating O-rings, chemical processing equipment, control valves, water treating equipment, pressure systems, plug valves, and high temperature applications. It is a stiff compound with low volatility, and resists chemicals, water, mineral oils, common gases, and organic compounds.

Key Properties

NLGI Grade 3-4, translucent white, used primarily in sealing vacuum and pressure systems.


Lubrication for control and pressure plug valves, water softener and faucet valves; Sealant for vacuum and pressure systems; Sealant for outdoor equipment (also shipboard) subject to washing and harsh environmental exposure: meters, electrical service entrance and underground connections; Chemical barrier coating; Rubber and plastic O-rings, gaskets, and seals.

Features & Benefits

Good resistance to most chemicals; Wide service temperature range; Low vapor pressure; Low volatility; Excellent water resistance. Meets FDA 21 CFR 175.300. Reduces wear in plastic-to-metal and rubber-to-metal contact.


Silicone oil, Inorganic thickener


Product Type Compound
Chemistry Silicone
NLGI Grade 3-4
Thickener Silica
Cure Temp NA°C
High Temp 204°C
Low Temp -40°C
Color Translucent White
Hazmat No

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