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SF1204 and SF1256 silicone fluids are mixtures of cyclic dimethyl siloxanes. SF1204 is ~15% cyclopentasiloxane and ~85% cyclotetrasiloxane and SF1256 is ~25% cyclohexasiloxane and ~75% cyclopentasiloxane. SF1257 and SF1258 silicone fluids are also mixtures of cyclic dimethyl siloxanes. SF1257 is ~30% cyclohexasiloxane and ~70% cyclopentasiloxane, and SF1258 is ~35% cyclohexasiloxane and ~65% cyclopentasiloxane. SF1173 and SF1202 silicone fluids are mainly single component of volatile cyclic dimethyl siloxanes where SF1173 is primarily cyclotetrasiloxane, and SF1202 is primarily cyclopentasiloxane.

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