Gelest FMS-221

Identification & Functionality

Chemical Family

Fluorosilicones

Product Type

Grease,

Heat Transfer Fluid,

Lubricant

Technologies

Ready-to-Use Products

Product Families

Ready-to-Use Products — Fluids & Lubricants

Greases,

Heat Transfer Fluids,

Lubricants & Oils

Chemical Structure

Features & Benefits

Ready-to-Use Product Features

Extreme Pressure Performance,

Fuel Resistant,

Good Damping,

High Density

Applications & Uses

Markets

Automotive & Transportation

Applications

Automotive & Transportation — Transportation

Aerospace & Aviation

Application Area

Aerospace Applications,

Bearings,

Gears,

Optical Applications

Properties

Physical Form

Liquid

Typical Properties

	Value	Units	Test Method / Conditions
Molecular Weight	1800.0	g/mol	—
Density	1.16	g/ml	—
Refractive Index (at 20°C)	1.387	—	—
Viscosity (at 25°C)	80 - 120	cSt	—
Pour Point	-55.0	°C	—
Specific Gravity	1.16	—	—
Surface Tension	21.4	mN/m	—

Thermal Properties

	Value	Units	Test Method / Conditions
Glass Transistion Temperature (Tg)	-103.0	°C	—

Regulatory & Compliance

Chemical Inventories

TSCA (USA)

Technical Details & Test Data

Technical Details

Many advantages of fluorocarbons and silicones are combined in fluorosilicones. The materials are useful from -40° to 230°C in a wide range of aggressive service environments. They have achieved a number of unique applications due to their chemical and solvent resistance to lubricity. For more information please refer to Gelest Silicone Fluids: Stable, Inert Media Brochure.

Packaging & Availability

Standard Packaging

• 100 g
• 1 kg
• 10 kg