Datasheet

Technical data sheet for ELASTOSIL® RT 607 A/B / Version: 1.0 / Date of last alteration: 05.05.2008 1 / 2
Product description
ELASTOSIL® RT 607 A/B is a pourable, addition-
curing RTV-2 silicone rubber.
Special features
- two-part, 9 : 1 mixing ratio
- low viscosity
- rapid heat cure
- high hardness
- excellent heat stability
- flame retardant
Application
- general purpose Encapsulant
Processing
Caution:
Only components A and B with the same lot number
may be processed together!
To ensure homogeneity of the material, the
components must be stirred thoroughly before they are
removed or processed in their containers, in order to
uniformly disperse any filler that might have settled
during storage.
Surface preparation:
All surfaces must be clean and free of contaminants
that will inhibit the cure of ELASTOSIL® RT 607 A/B.
Examples of inhibiting contaminants are sulfur
containing materials, plasticizers, urethanes, amine
containing materials and organometallic compounds -
especially organotin compounds. If a substrate's ability
to inhibit cure is unknown, a small scale test should be
run to determine compatibility.
Mixing:
Component A of ELASTOSIL® RT 607 contains the
platinum catalyst, component B the crosslinker. Even
traces of the platinum catalyst may cause gelling of
the component containing the crosslinker. Therefore
tools (spatula, stirrers, etc.) used for handling the
platinumcontaining component or the catalyzed
compound must not come into contact with this
component.
The two components should be thoroughly mixed at a
9 : 1 ratio by weight or volume.
To eliminate any air introduced during dispensing or
trapped under components or devices a vacuum
encapsulation is recommended.
Curing:
Curing time of addition curing silicone rubber is highly
dependent on temperature, size and heat sink
properties of the component being potted.
The reactivity can be adjusted within wide limits by
adding Catalyst EP or Inhibitor PT 88 to suit the
processing requirements of the particular application.
Catalyst EP increases the reactivity, i. e., pot life and
curing time are reduced. Inhibitor PT 88 is a pot life
extender and prolongs pot life and curing time.
Further information is given in our leaflet "Catalyst
EP/Inhibitor PT88".
We recommend running preliminary tests to optimize
conditions for the particular application.
Comprehensive processing instructions are given in
our leaflet "Wacker RTV-2 Silicone Rubber -
Processing".
Storage
The 'Best use before end' date of each batch is shown
on the product label.
Storage beyond the date specified on the label does
not necessarily mean that the product is no longer
usable. In this case however, the properties required
for the intended use must be checked for quality
assurance reasons.
ELASTOSIL® RT 607 A/B
RTV-2 SILICONE RUBBER / ENCAPSULANT