Loctite 315 Thermally Conductive Adhesive Syringe 25ml



Loctite 315 Thermally Conductive Adhesive Syringe 25ml

  • Shear Strength, Steel : 13
  • Viscosity Temperature : 77°F
  • Viscosity : 600000 mPa.s (cP) Brookfield
  • Color : Blue
  • Curing Type : Room Temperature Cure with Activator
  • Application : Bonding

LOCTITE® 315 is a blue, 1-part, self-shimming, thermally conductive, highly viscous, modified acrylic adhesive paste for bonding electrical components to heat sinks with an insulating gap. It provides excellent heat dissipation while the controlled strength permits field and service repair. It produces a consistent 5 - 6 mm gap between the component and heat sink.

  • High thermal conductivity
  • Self-shimming, produces a consistent 0.15 mm gap
  • Controlled strength for serviceability
  • Eliminates the need for mechanical fasteners
LOCTITE 315 is a self-shimming thermally conductive, one
part adhesive for bonding electrical components to heat sinks
with an insulating gap. The high thermal conductivity provides
excellent heat dissipation for thermally sensitive components,
while the controlled strength permits field and service repair.
The self-shimming property produces a consistent 5-6 mil gap
between the component and the heat sink. This gap results in
electrical insulation while maintaining thermal conductivity.
Typical applications include bonding transformers, transistors
and other heat generating electronic components to printed
circuit board assemblies or heat sinks. In high pot applications
this product should be limited to a maximum of 500 volts.
Activator 7387™ is required for proper curing of Loctite®
Output™ adhesives.
Thermal Cycle Resistance

Bonded aluminum to epoxyglass lapshears cured 72 hours @
22 °C using Activator 7387™ on 1 side were subjected to
thermal cycling of 15 °C to 100 °C with a ramp time of 30
minutes. No loss in strength occurred after 1000 hours of cycle

For safe handling information on this product, consult the Safety
Data Sheet (SDS).
Directions for use:

  1. For best performance bond surfaces should be clean and free
    from grease.
  2. Use applicator to apply the activator to the surface to be bonded.
  3. After the solvent evaporates, the active ingredients will appear
    wet, and will remain active for up to 2 hours after application.
    Contamination of the surface before bonding should be
  4. Apply adhesive to the unactivated surface.
  5. Secure the assembly, and wait for the adhesive to fixture
    (approximately 5 minutes) before any further handling. Full cure
    occurs in 4 - 24 hours.
  6. The amount of adhesive applied to the part or heat sink should
    be limited to the amount necessary to fill the bond and just
    enough to give a small fillet.
  7. The dispensing or application of the adhesive should be done as
    to minimize air entrapment within the bondline.
  8. The successful application of this product depends on accurate
    dispensing on the parts to be bonded. Loctite Equipment
    Engineers are available to assist you in selecting and
    implementing the appropriate dispensing equipment for your

Loctite Material Specification

LMS dated December-10, 2001. Test reports for each batch are
available for the indicated properties. LMS test reports include
selected QC test parameters considered appropriate to specifications
for customer use. Additionally, comprehensive controls are in place to
assure product quality and consistency. Special customer
specification requirements may be coordinated through Henkel Quality.

Store product in the unopened container in a dry location. Storage
information may be indicated on the product container labeling.
Optimal Storage: 2 °C to 8 °C. Storage below 2 °C or greater than
8 °C can adversely affect product properties. Material removed
from containers may be contaminated during use. Do not return
product to the original container. Henkel Corporation 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 Representative.
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