Silicone Fluids

PST-800 Series, DC® 200 and Xiameter® PMX-200 offsets

Silicone Fluids from PolySi® G-MAN® Lubricants perform under the most extreme industrial conditions and over a wide range of temperatures. Silicone fluids resist salts, dilute alkalis and acids, and resist harsh chemicals, fuels, and solvents. They also resist evaporation, oxidation, and radiation; they are non-carbonizing and inherently inert.

The range of silicone fluid viscosities, from 1cst- 600,000 CST, provides many alternatives to solve your lubricating needs.  Silicone fluids can be formulated into greases or pastes, depending on your application. The fluids include dimethylpolysiloxane, methyl phenyl fluids, and alkyl blends. These materials are commonly used to lubricate o-rings extending the life and reducing the wear, mold releases, release agents, diluent fluids, dampening media, and rubber components.


Silicone Fluid Series and Offsets:

PST-800 Series Silicone Fluids Full range of viscosities, see chart below for details
Dow Corning® DC 200 Fluids PolySi® offers a variety of packaging for silicone fluids in our PST-800 series shown below.
Xiameter® PMX-200 Silicone Fluids PolySi® offers an equivalent to Xiameter® PMX-200 Fluids in any size or quantity.


Silicone Fluids from PolySi® G-MAN® Lubricants


Typical Silicone Fluid Applications:


Hydraulically actuated valves Release material
Hydraulic arrestors (snubbers) O-ring lubrication
Polishing material Plastic additive
Base material for lubricants and other products Coolants


PolySi® Silicone Lubricating Fluids PST-800 Series and offsets

PolySi® Lubricants Description & CST
PST-801 Dimethylpolysiloxane, 100
PST-803 Dimethylpolysiloxane, 350
PST-805 Dimethylpolysiloxane, 500
PST-809 Dimethylpolysiloxane, 1,000
PST-810 Dimethylpolysiloxane, 10,000
PST-815 Dimethylpolysiloxane, 5,000
PST-822 Methylalkylpolysiloxane, 100
PST-828 Methylalkylpolysiloxane, 300
PST-830 Dimethylpolysiloxane, 30,000
PST-841 * Dimethylpolysiloxane, 100,000
PST-851 Methylphenylpolysiloxane, 200
PST-850 Dimethylpolysiloxane, 50
PST-860 Dimethylpolysiloxane, 60,000
PST Silicone Brake Fluid DOT 5 Silicone Brake Fluid
Mil Spec PRF-46176B

* PST-841 is available in 1 gallon pails and 2 oz. tubes.

Seal Recommendations for PST-841


PST-841 O-Ring_Lubricant

Natural Rubber Yes
Buna Yes
Flurosilicone Rubber Yes
Silicone Rubber No***
Butyl Yes
G.R.S. Yes
E.P.R.** N/A
Neoprene Yes
Viton Yes
Teflon Yes
Polypropylene N/A

** E.P.R Ethylene Propylene
*** Recommend PST Barium O-Ring Lube