Hydrosize® U1-03

Brand Family Overview

FGLASS™ is a versatile family of fiber sizings and film formers used in the manufacturing of both glass fiber and carbon fiber. It is suitable for both chopped strand and continuous fiber applications.

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Designed to be a fiber sizing coating with excellent adhesion and abrasion resistance.


Phenoxy modified polyurethane dispersion

Performance Attributes

This product is used in many applications including the following:

ApplicationProperties Imparted
Fiber Sizingchopped strands, impact resistance, PA compatible, PET/PBT compatible

See more products recommended for Fiber Sizing.
Physical Properties

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

AppearanceMilky white dispersion
pH6.5 - 8.5
Emulsifier ChargeAnionic / Nonionic
Percent Non-Volatile49.0 - 52.0
Recommended pH Range>6
Brookfield Viscosity (cps, mPa·s) 250 - 700
Spindle Number3

Site of Manufacture (and Product Code)

CIN (U103)


Avoid contact with eyes, skin and clothing. Handle in accordance with good industrial hygiene and safety practice. Wear personal protective equipment.