VaporCoat® 850

Brand Family Overview

Our Hydrosize® line of products includes sizing solutions designed for use in the manufacturing of glass fiber, carbon fiber and natural fiber, using chopped strand or continuous strand fiber glass. These are in turn used to manufacture composite products and components.

See more Hydrosize products.


Designed primarily for MVTR, it also provides water resistance and some oil and grease resistance. It is gluable with both cold set and hot melt adhesives and is printable with water based inks.


Moisture barrier (MVTR) coating.

Physical Properties

These physical properties are typical but should not be considered specifications.

AppearanceOff-white to gray emulsion
pH8.0 - 10.0
Percent Non-Volatile60.5 - 62.0
Brookfield Viscosity (cps, mPa·s) 450 - 850
Spindle Number3

Site of Manufacture (and Product Code)


Application Data

VaporCoat® 850 should be applied via rod coater.