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EPUSIL RTV-262
High tear, mid Viscosity RTV Silicone
Description
Epusil RTV-262 is
a mid viscosity, translucent RTV silicone Epusil RTV-
262. Is used in situations where component
identification and vibration shock protection is
needed. Epusil RTV-262 cure may be accelerated by
the use of elevated temperature.
PROPERTIES -
Uncured
Part A
Part B
Color,
visual...............................……..
Translucent Clear
Viscosity,
ASTM-D-1084 (cps, @250.). 4000 -
50000 1,000
Specific Gravity (gr/cm3
@ 250)............ 1.1
1.05
Mix Ratio
(weight)................…..……..
10:1
Specific Gravity
(mixed @ 250)..........…
1.1
Pot Life @ 250C
(hours)............………
2 hour
Shelf Life @ 250C
....................……….
6 months
PROPERTIES -
Cured
Physical
Hardness,
ASTM-D-2240 (Durometer)............. Shore
A 38-45
Tensile Strength,
ASTM-D-412........................ 750
psi. (50 kg/cm2)
Tensile Elongation,
ASTM-D-412 .................. 400%
Tear Strength, (kN/m)
die B .......................... 25
Coefficient of
Thermal Expansion (cm/cm/0C).. 27*10-5
Linear Shrinkage
............................................. < 0.2
Service Temperature
....................................... -550C
to 2040C
Electrical
Dielectric Strength,
ASTM-D-149 (volts/mil)... 550
Dielectric Constant,
ASTM-D-150 (60 Hz)...... 3.0
Dissipation Factor,
ASTM-D-150 (60Hz)........ 0.001
Volume Resistivity,
ASTM-D-257 (ohm-cm)... 1.0*1015
MIXING INSTRUCTIONS
1.
Weigh out amount of Epusil RTV-262 Part A.
2.
Measure 1 part of B side into each 10 parts of A
side
3.
Mix thoroughly, scraping both sides and bottom of
container.
4.
If void-free cured RTV is essential, evacuate the
RTV at 0.15 cm pressure for about five minutes,
immediately after catalyst incorporation. Excessive
evacuation can result in slow or complete loss of
cure. Evacuate only 1-2 minutes more after the head
collapses.
CURE SCHEDULE
Overnight at room temperature (12-16 hours) at 250C;
two hours at 450C; one hour @ 600C.
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