Silicone grease

<p>Silicone grease, sometimes called dielectric grease, is a waterproof <a href="/facts/Grease_(lubricant)/SoG6pwuV">grease</a> made by combining a <a href="/facts/Silicone_oil/zeg2chHf">silicone oil</a> with a thickener. Most commonly, the silicone oil is <a href="/facts/Polydimethylsiloxane/2lPYh00F">polydimethylsiloxane</a> (PDMS) and the thickener is <a href="/facts/Amorphous/YTIzmrR0">amorphous</a> <a href="/facts/Fumed_silica/fMM6HJ04">fumed silica</a>. Using this formulation, silicone grease is a translucent white viscous paste, with exact properties dependent on the type and proportion of the components. More specialized silicone greases are made from fluorinated silicones or, for low-temperature applications, PDMS containing some <a href="/facts/Phenyl/Ql9Yx5uu">phenyl</a> substituents in place of methyl groups. Other thickeners may be used, including <a href="/facts/Stearic_acid/ajnXYFo9">stearates</a> and powdered <a href="/facts/Polytetrafluorethylene/jesBNXKq">polytetrafluorethylene</a> (PTFE).  Greases formulated from silicone oils with silica thickener are sometimes referred to as silicone paste to distinguish them from silicone grease made with silicone oil and a soap thickener.
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Silicone grease open-in-new

Silicone grease