DuPont Molykote (Formerly Dow Corning) High-Vacuum Grease
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.
Applications
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.
Composition
Silicone oil， Inorganic thickener
| Product Details | |
| 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 |
Performance Data
Solubility
MOLYKOTE® High-Vacuum Grease is insoluble in water， methanol， ethanol， acetone， glycol and glycerine. It can be dispersed in kerosene， Stoddard solvent， benzene， toluene， ethyl ether or petroleum ether.
Chemical Resistance
MOLYKOTE® High-Vacuum Grease is unaffected by most vegetable and minerals oils， many organic compounds， and most common gases. It is also resistant to most aqueous solutions of inorganic salts and to dilute acids and alkalies. The suitability of MOLYKOTE® High-Vacuum Grease should always be tested before the material is adopted for regular use.
Handling Precautions
PRODUCT SAFETY INFORMATION REQUIRED FOR SAFE USE IS NOT INCLUDED IN THIS DOCUMENT. BEFORE HANDLING， READ SAFETY DATA SHEETS AND CONTAINER LABELS FOR SAFE USE， PHYSICAL AND HEALTH HAZARD INFORMATION.
Typical Properties
Specification writers: These values are not intended for use in preparing specifications. Please contact your local MOLYKOTE® sales representative prior to writing specifications on this product.
| Standard(1) | Test | Unit | Result |
| Color | White to gray， translucent | ||
| Physical nature | Stiff compound | ||
| ISO 2137 | Penetration， unworked | mm/10 | 170 to 230 |
| ISO 2137 | Penetration， worked 60， maximum | mm/10 | <260 |
| CTM 0033A A | Bleed， 24 hours; 200°C | % | <0.5 |
| CTM 0033A B | Evaporation， 24 hours; 200°C | % | <2.0 |
| Melting point | °C | None | |
| (1)ISO: International Organization for Standardization. CTM: Corporate Test Method; copies of CTMs are available on request. | |||
Usable Life and Storage
When stored at or below 30°C in the original unopened containers， this product has a usable life of 60 months from the date of production.
Packaging
This product is available in different standard container sizes. Detailed container size information should be obtained from your nearest MOLYKOTE® sales office or MOLYKOTE® distributor
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