1001 Trout Brook Crossing
Rocky Hill, CT 06067-3910
Telephone: (860) 571-5100
FAX: (860) 571-5465
Product Description Sheet
Superflex™ 596 Red High Temp
RTV Silicone Adhesive Sealant
Industrial Version, April 2000
PRODUCT DESCRIPTION
LOCTITE® Superflex™ Red High Temp RTV Silicone
Adhesive Sealant is a ready to use, single component, room
temperature, vulcanizing adhesive/sealant for making 500ºF to
600ºF gaskets and seals.
Uncured Superflex™ Red High Temp RTV Silicone Adhesive
Sealant is a red, viscous, non-sag, low volatile paste which
emits a small amount of acetic acid (vinegar-like odor) while
curing to a flexible rubber. The material cures on exposure to
atmospheric moisture to provide a tough, flexible, waterproof,
oil-resistant silicone rubber seal. It is specially formulated to
meet the low silicone volatiles requirements of the automotive
industry for 600ºF flange sealants. The non-sag properties of
this ready-to-use sealant allows its use on vertical as well as
horizontal surfaces.
TYPICAL APPLICATIONS
Applications for both plant maintenance and small, medium
and large-sized OEM include:
•
High temperature (600ºF) Adhesive - Bonds most all
substrates including silicone rubber.
•
Gasket dressing and sealant to up-grade conventional
metal and specialty pre-cut gaskets that often fail at
600ºF.
•
Formed-in-place Gasket/Sealant to replace pre-formed
gaskets that fail to function up to +600ºF.
•
Seal and encapsulate heating elements in electrical
appliances up to 500ºF continuous operation.
•
Sealant and adhesive for assembly and repair of
industrial furnaces, ovens, boilers, exhaust stacks and
high temperature ducting up to 500ºF continuous
operation.
•
Adhesive - sealant for MIL-A-46106A, Type 1
USE AND APPLICATION
This product is specifically formulated for gasketing and
sealing where high temperatures (600ºF) are experienced
such as exhaust manifolds - crossovers, high temperature
ovens and furnaces. Applications where sealing and bonding
are required under frequent exposure to temperatures above
450ºF to 600ºF would be the proper application for
Superflex™ Red High Temp RTV Silicone Adhesive Sealant.
As a formed-in-place gasket/sealant Superflex™ Red High
Temp RTV Silicone Adhesive Sealant has been designed to
give outstanding performance in typical automotive gasketing
applications including valve covers, oil pans, water pumps,
end seals, and rear axle housings. Excellent adhesive for
bonding and repairing fabricated silicone gaskets.
PRECAUTIONS FOR GASKETING APPLICATIONS
Do not use Superflex™ Red High Temp RTV Silicone
Adhesive Sealant for gasketing carburetors or fuel control
devices where it will be in constant contact with hydrocarbon
fuels. Material will develop excessive swell and loss of
mechanical properties.
Method of Application
Clean all mating surfaces with Loctite ODC-Free Cleaner &
Degreaser prior to applying Superflex™ Red High Temp RTV
Silicone Adhesive Sealant. Loctite Chisel Gasket Remover is
recommended to remove all old gasketing material from
mating surfaces. Finally, clean and dry the surfaces with
Loctite ODC-Free Cleaner & Degreaser or mineral spirits.
Apply Superfelx™ Red High Temp RTV Silicone Adhesive
Sealant in a continuous bead around all holes and perimeters
of mating parts. Then assemble parts within 5 minutes by
mating the two surfaces. Press or clamp firmly (do not slide
parts together). The sealant will become tack-free on the
exposed surfaces in less than one hour after application. A
1/4 inch diameter bead exposed to atmospheric moisture
cures in approximately 24 hours.
Clean up and Removal
Uncured Superflex™ Red High Temp RTV Silicone Adhesive
Sealant should be cleaned up immediately with Loctite
Cleaning Solvent or mineral spirits. Cured silicone rubber can
be cut away with appropriate scrapers. The use of Loctite
Chisel® Gasket Remover or specially selected caustic
industrial (paint) strippers will dissolve the remaining rubber.
PROPERTIES OF UNCURED MATERIAL
Typical Value
Polysiloxane
Thixotropic red paste
1.05
>200
Chemical Type
Appearance
Specific Gravity
Flash Point, TCC, ºF
PROPERTIES OF CURED MATERIAL
Measured on cured sheets ∼0.125” thick
Cured @ 77ºF, 50% RH for 7 days, tested at RT, 77ºF.
Durometer Hardness, ASTM D 676, Shore A
Elongation, ASTM D 638, %
2
Tensile Strength, ASTM D 882, psi (N/mm )
Typical Value
36
330
315 (2.2)
HEAT AGING
Heat Aging at
Property
Shore A
Tensile, psi
Elongation, %
Heat Aging at
Property
Shore A
Tensile, psi
Elongation, %
Heat Aging at
Property
Shore A
Tensile, psi
Elongation, %
1
29
290
370
400ºF (204ºC)
WEEKS
2
4
28
25
320
340
450
490
8
22
280
500
1
23
190
520
500ºF (260ºC)
WEEKS
2
4
16
15
100
55
440
280
7
17
50
210
Initial*
36
315
330
Initial*
36
315
330
Initial*
36
315
330
1
48
205
175
600ºF (316ºC)
WEEKS
2
64
235
70
3
82
220
25
*Measured on cured sheets ∼0.125” thick, cured @ 77ºF, 50% RH for 7
days, tested at room temperature 77ºF.
NOT FOR PRODUCT SPECIFICATIONS
THE TECHNICAL DATA CONTAINED HEREIN ARE INTENDED AS REFERENCE ONLY.
PLEASE CONTACT LOCTITE CORPORATION QUALITY DEPARTMENT FOR ASSISTANCE AND RECOMMENDATIONS ON SPECIFICATIONS FOR THIS PRODUCT.
ROCKY HILL, CT FAX: +1 (860)- 571-5473
DUBLIN, IRELAND FAX: +353-(1)-451-9959
PDS Superflex™596 Red High Temp RTV Silicone Adhesive Sealant, April 2000
At 500ºF, softening is due to reversion and will occur
regardless of how the sealant is used. For flange sealing, this
softening is usually an attribute.
At 600ºF, hardening is due to thermal rearrangement of the
polymer and also oxidation. Oxidation is retarded when the
product is used as a flange sealant.
GENERAL INFORMATION
This product is not recommended for use in pure oxygen
and/or oxygen rich systems and should not be selected
as a sealant for chlorine or other strong oxidizing
materials.
For safe handling information on this product, consult the
Material Safety Data Sheet, (MSDS).
Storage
Product shall be ideally stored in a cool, dry location in
unopened containers at a temperature between 8°C to 28°C
(46°F to 82°F) unless otherwise labeled. Optimal storage is
at the lower half of this temperature range. To prevent
contamination of unused product, do not return any material
to its original container.
For further specific shelf life
information, contact your local Technical Service Center.
Data Ranges
The data contained herein may be reported as a typical value
and/or range. Values are based on actual test data and are
verified on a periodic basis.
Note
The data contained herein are furnished for information only
and are believed to be reliable.
We cannot assume
responsibility for the results obtained by others over whose
methods we have no control. It is the user's responsibility to
determine suitability for the user's purpose of any production
methods mentioned herein and to adopt such precautions as
may be advisable for the protection of property and of persons
against any hazards that may be involved in the handling and
use thereof. In light of the foregoing, Loctite Corporation
specifically disclaims all warranties expressed or implied,
including warranties of merchantability or fitness for a
particular purpose, arising from sale or use of Loctite
Corporation’s products. Loctite Corporation specifically
disclaims any liability for consequential of incidental
damages of any kind, including lost profits. The discussion
herein of various processes or compositions is not to be
interpreted as representation that they are free from
domination of patents owned by others or as a license under
any Loctite Corporation patents that may cover such
processes or compositions.
We recommend that each
prospective user test his proposed application before repetitive
use, using this data as a guide. This product may be covered
by one or more United States or foreign patents or patent
applications.
Loctite and Superflex are Registered Trademarks of Loctite Corporation, USA