Dimethicone- ▸ Mold release for rubber, plastic and metal parts and digital-printing equipment — durable, persistent film
- ▸ Paint polishes, paint conditioners and plastic / vinyl care products — gloss and water repellency
- ▸ Food-grade (NSF/USDA H1) incidental-contact lubricant and defoamer for processing and packaging equipment
- ▸ Heat-transfer / thermal-bath oil and heat-resistant lubricant for polymer parts
- ▸ Personal-care emollient and barrier in creams, lotions, conditioners and makeup
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 350 cSt is the general-purpose grade and the one manufacturers tie to paint/plastic care and to NSF H1 food-contact registration. Its higher mid viscosity gives a durable, persistent release film with little migration, so it is used for mold release, paint polishes and plastic-care products, food-grade incidental-contact lubrication, and personal-care emolliency.
Frequently Asked Questions
What is 350 cSt silicone fluid used for?
350 cSt silicone fluid (dimethicone / PDMS) is the general-purpose grade: mold release, paint polishes and plastic-care products, NSF H1 food-grade incidental-contact lubrication and defoaming, heat-transfer duty, and personal-care emolliency. Its higher mid viscosity gives a durable, low-migration film.
Is 350 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); 350 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 350 cSt silicone oil flammable?
No. At a flash point of ≥ 315 °C (open cup) the 350 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.