Epoxosil RTV-1112

(close this window when finished. if you are using another browser than IE,

Click Here to go back)


General Purpose RTV Silicone Sealant/Encapsulant.



Epoxosil RTV-1112 is a multi-purpose casting material for use as an encapsulate, sealant potting compound, coating compound and art reproduction molding compound.  Epoxosil RTV-1112 has been used successfully in protecting electronic components, assemblies and delicate systems. Epoxosil RTV-1112 exhibits excellent electrical properties, low temperature flexibility and high temperature stability. A variety of catalysts are available for different cure situations.

Properties - Uncured:-

Color, visual                                                               Pink

Viscosity ASTM-D-1084                                          25,000 cps

Specific Gravity                                                         1.3

Mix Ratio (RTV cat 12)                                            0.1-0.5 by weight

Mixed Viscosity                                                         23,000 cps

Pot Life @ 72C                                                        1-4 Hours

Shelf Life @ 72C                                                     6 Months

Properties - Cured:-


Hardness, ASTM-D-2240 (Durometer)                  Shore A 50

Tensile Strength, ASTM-D-412                               560 psi

Tensile Elongation, ASTM-D-412                            175%

Tear Strength, ASTM-D-624 (Die B lb./in.)             30

Coefficient of Thermal Expansion (cm/cm/C)        21 x 10^-5 psi

Service Temperature                                                  -55C to 204C

Shrinkage                                                                     0.2% to 0.5%


Dielectric Strength, ASTM-D-149 (volts/mil)            500

Dielectric Constant, ASTM-D-150 (60 Hz)               3.5

Dissipation Factor, ASTM-D-150(60 Hz)                  0.01

Volume Resistivity, ASTM-D-257 (ohm-cm)             1x10^15

Thermal Conductivity                                                    2.2 BTU

Mixing Instructions:

  1. Weigh out the required amount of Epoxosil RTV-1112.

  2. Measure the required amount of catalyst.

  3. Mix thoroughly, scraping both the bottom and sides of the mixing container.

  4. Evacuate mixture @ 29 in Hg for 3-4 minutes to insure a void-free casting.

  5. Pour into unit, cavity or mold.

Cure Schedule:

Overnight at room temperature (12-16 hours) @ 72F.  Faster tack-free surfaces achieved using varied catalysts.


Copyright 1999-2000 All rights reserved US Epoxy, Inc.
268 Route 112, Patchogue, NY 11772
(800) 332 3883 fax (631) 654 0217