Enthone ENTEK NR-40
Mild cleaner and rust inhibitor for iron and steel
Entek® NR-40 is a non-flammable, alkaline liquid material that is mixed with water and used for degreasing and
cleaning, temporary rustproofing, or hot water drying of steel parts. Entek NR-40 solutions leave a thin, virtually
invisible film on the work to guard against corrosion. READ ENTIRE TECHNICAL DATA SHEET BEFORE
USING THIS PRODUCT.
As a degreasing and cleaning agent, Entek NR-40 is ideal for complicated iron and steel parts that cannot
be thoroughly rinsed with plain water especially where residual water may cause rusting. Such parts include
filters, coils, gear assemblies, etc. It is also used to clean iron and steel parts between processing operations
and to preclean iron and steel prior to other cleaning procedures where the metal must remain wet or stay
immersedbin the cleaning solution. Entek NR-40 solutions may also be used to clean painted, lacquered
or enameled parts where no attack can be tolerated on the finish.
Entek NR-40 solutions provide protection against rusting between various finishing operations and prevent
rusting of parts during storage in water solutions. They can be used for cleaning and temporary rustproofing
in one operation without a water rinse. Entek NR-40 solutions are used in hot water drying of iron and steel
parts that tend to rust during the drying procedure. Entek NR-40 lowers the surface tension of the water.