Dimethicone- ▸ Lab bath / heat-transfer fluid: wide service range and low viscosity change with temperature; better convection than heavier grades
- ▸ Textile softening and water repellency: soft, velvety hand-feel while keeping fabric breathable
- ▸ Sewing-thread / yarn / spin-finish lubrication: lowers dynamic friction and reduces fiber breakage
- ▸ Mold release for rubber and plastic, and general heat-resistant lubrication of polymer parts
- ▸ Dielectric fluid, light damping medium and antifoam
Mid- and high-viscosity polydimethylsiloxane fluids (>= 5 cSt) are reported as not meeting GHS hazard-classification criteria. The grade-specific SDS governs. A full SDS is supplied with every shipment and on request; hazard status is confirmed against the grade-specific SDS.
Silicone Oil 50 cSt sits at the light end of the mid band, where flow, fiber penetration and bath circulation matter more than film durability. It is favored for textile softening and thread/yarn lubrication, mold release, lab bath and heat-transfer duty, and as a dielectric and light damping medium.
Frequently Asked Questions
What is 50 cSt silicone fluid used for?
50 cSt silicone fluid (dimethicone / PDMS) is a light mid-band grade used for textile softening and thread/yarn lubrication, mold release, lab-bath and heat-transfer duty, and as a dielectric and light damping medium. Its low-mid viscosity penetrates and coats fibers evenly.
Is 50 cSt silicone fluid the same as dimethicone or silicone oil?
Yes — silicone fluid, silicone oil, dimethicone and PDMS all refer to the same linear polydimethylsiloxane (CAS 9006-65-9); 50 cSt is the viscosity grade. Because it is a polymer rather than a single molecule, properties are reported per grade rather than as one fixed molecular weight.
Is 50 cSt silicone oil flammable?
No. At a flash point of ≥ 285 °C (open cup) the 50 cSt grade is not classified as flammable, and mid- to high-viscosity PDMS is not otherwise GHS-classified. Only the volatile sub-5 cSt grades (and discrete volatiles like MM) are flammable. A grade-specific SDS ships with every order.
Identity and hazard data sourced from PubChem and authoritative regulatory references. Confirm against the grade-specific CoA and SDS supplied with every shipment.