Loctite SF 7400 Varnistop Coating



Loctite Sf 7400 Varnistop Coating 20ml

  • Color : Red
  • Curing Type : Solvent Evaporation
  • Application : Visible Marker for Use on Electronics Equipment

LOCTITE SF 7400 is a dark-red, solvent-based marking ink for use on electronic equipment. It is ideal for tamper-proofing adjustment points or marking components to indicate they have been set or tested. The product dries quickly and has excellent adhesion to a range of substrates. It has a service temperature range of -35 to +145°C and is available in a 20 ml pack size.

  • Formulated for electronic applications
  • Provides clear visual indication
  • Dries quickly
  • Excellent adhesion to various substrates
LOCTITE® SF 7400™ is a solvent based dark red marking ink
for use on electronic equipment. The product dries quickly and
has excellent adhesion to a range of materials. It is ideal for
tamper-proofing adjustment points or marking components to
indicate they have been set or tested.

LOCTITE® SF 7400™ dries by the evaporation of solvent to
leave a pigmented film of organic polymer. When fully dried, it
has excellent visibility and shows good adhesion to a wide
range of polymers and metals.
Even when fully dried, LOCTITE® SF 7400™ will re-dissolve
in solvents but the rate is slow. Removal of the cured film by
mechanical action followed by wiping off the residues with
butyl acetate or MEK is the most effective method of removal.

This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected
with a sealant for chlorine or other strong oxidizing
For safe handling information on this product, consult the
Safety Data Sheet (SDS).
Directions for use

  1. Some settling of the pigment will occur on storage.
    Thoroughly shake the container to re-disperse the
    pigment prior to use.
  2. Allow the product to stand before use to eliminate air
    bubbles created by the pigment dispersion step.
  3. Apply LOCTITE® SF 7400™ to the surface.
  4. Thin films of LOCTITE® SF 7400™ (100 micron) will dry in
    approximately 5 minutes to a tack free surface at room
    temperature. Thicker films will dry on the surface in
    approximately 5 minutes but will require a longer time for
    thorough drying. LOCTITE® SF 7400™ will be completely
    dry in approximately 6 hours.
  5. Product can be removed by wiping with solvents (eg. MEK
    or butyl acetate) while it is still liquid.
  6. Consult your local Henkel®
    Technical Services Center for
    information on automatic application equipment which is
    suitable for use with LOCTITE® SF 7400™.

Not for product specifications

The technical data contained herein are intended as reference
only. Please contact your local quality department for
assistance and recommendations on specifications for this

The product is classified as flammable and must be stored in
an appropriate manner in compliance with relevant
regulations. Do not store near oxidizing agents or combustible
materials. Store product in the unopened container in a dry
location. Storage information may also be indicated on the
product container labelling.
Optimal Storage: 8 °C to 21 °C. Storage below 8 °C or
greater than 28 °C can adversely affect product properties.
Material removed from containers may be contaminated during
use. Do not return product to the original container. Henkel
cannot assume responsibility for product which has been
contaminated or stored under conditions other than those
previously indicated. If additional information is required,
please contact your local Technical Service Center or
Customer Service Representive.
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