The unique properties inherent in the molecular backbone of silicone and oxygen contribute to silicone’s attractiveness where service requirements are extreme and/or where minimal maintenance attention is desired. Under many circumstances, silicone based products offer longer service life.
Novagard Silicones Greases and Compounds
01 Overview
Silicone based lubricants provide high performance and are more versatile than most materials available today.
Typical Properties
Wide operating temperature ranges, -100°F to 400°F, higher in intermittent operation
Ability to maintain viscosity, and/or consistency, without solidifying, smoking, melting or charring
High oxidation resistance
Good water washout resistance
Excellent dielectric properties
Noncorrosive, chemically inert, compatible with plastic and most organics
Good release properties
Excellent hydrolytic stability
Silicone Greases and Compounds offer:
Excellent oxidation resistance and thermal stability
Superior hydrolytic stability and water washout resistance
Broad operating temperature range (−56°C to 204°C)
Exceptional release properties and good lubricity
Excellent dielectric properties, corrosion protection and viscosity stability
Chemically inert and compatible with a wide range of substrates
02 Generalities
Material Compatibility
Generally, silicone materials have the following impact on material properties:
- Silicone Rubber – Tends to swell, soften and decrease in tensile strength.
- Fluoro Rubber – No effect.
- Organic Rubber – Slight shrinkage, hardening and loss of physical properties.
- Plastic – No effect on polycarbonate, phenolic, polystyrene nylon, methacrylics or PTFE. Slight
swelling or shrinkage may occur in polyacetal, polyethylene, polypropylene or PVC.
Methods of Application
Silicone greases and compounds may be wiped on, brushed on, dispensed from a grease gun or applied by automated equipment. In addition, when dispersed in a non-polar solvent they may be applied by brushing, spraying or dip coating. Caution is required in the selection of solvents.
Handling and Safety
Material Safety Data sheets are available upon request from Novagard Solutions.
Cleanup of silicone greases and compounds can be accomplished using non-polar solvents such as mineral spirits. They are soluble in stoddard solvent, toluene and xylene. Caution should be observed whenever handling solvents.
Silicone greases are not suitable for use in contact with high concentrations of oxygen or highly oxidative materials. Contact with high pressure oxygen, ozone, peroxides or fuming nitric acid can result in fire or explosion. Silicone materials are damaged by exposure to strong mineral acids (e.g. sulfuric, hydrochloric, nitric), strong alkaline (e.g. sodium or potassium hydroxides), nitrates or peroxides.
03 Products
Novagard® Thermally Conductive Compounds
Ideal for thermocouple wells, power diodes, transistors, semiconductors and ballasts. Excellent heat transfer compound for electrical and electronic industries, with outstanding long-term storage stability without oil separation.
Novagard® NSF 61 Standard Lubricant
Ideal for valve and O-ring lubrication with excellent vacuum capabilities and outstanding water resistance. Certified to NSF Standard 61 for Drinking Water System Components.
Novagard® High Voltage Dielectric Grease Compounds
Ideal for high voltage insulators to prevent flashover in addition to being an excellent dielectric and water repellent. Provides good adherence while chemically inactive with low toxicity.
Novagard® Dielectric Silicone Grease
Outstanding water repellence while hydrolytically stable with low toxicity. Wide temperature ranges of -57°C to 204°C
Novagard Rubber and Plastic Lubricants
Excellent resistance to moisture, corrosion and oxidation while exhibiting wide temperature ranges -55°C to 150°C. Conformance to SAE and Military specifications.
Novagard Metal & Bearing Lubricants
These lithium soap thickened greases designed for metal to metal and non-metallic applications to reduce friction and wear under heavy loads, slow speeds, extreme temperature and variable environmental conditions. They are ideal lubricants for applications requiring extended service intervals.