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Product Details

Permatex Water Pump & Thermostat RTV Silicone Gasket Maker

A noncorrosive, sensor-safe RTV silicone gasket material formulated specifically for water pumps and thermostat housings. Highest water-glycol resistance available in an RTV silicone.

Automobile

Suggested Applications: Water pump and thermostat housings

Marine

Suggested Applications: Water pump and thermostat housings

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Description

PRODUCT DESCRIPTION S.I.N.: 834-300
Permatex Water Pump & Thermostat RTV Silicone Gasket is
a single component, room temperature vulcanizing gasketing
compound designed to provide reliable “formed-in-place”
gaskets for mechanical assemblies. This material cures on
exposure to moisture in the air to form a tough, flexible,
silicone rubber gasket. The product resists aging, weathering
and thermal cycling without hardening, shrinking or cracking.
Provides the highest water-glycol resistance available in an
RTV silicone.
PRODUCT BENEFITS
• Sensor safe, non-corrosive
• Superior adhesion and flexibility
• Easy application
• Replaces most cut gaskets
• Can be used as a gasket maker or dressing
• Non-flammable
• Non-toxic
TYPICAL APPLICATIONS
• Thermostat housings
• Water pumps
DIRECTIONS FOR USE
For assembly as a form-in-place gasket
1. Remove all previous material from mating surfaces.
Permatex Gasket Remover is recommended for most
materials, not for plastics or painted surfaces.
2. For best results, clean and dry all surfaces with a
residue-free solvent, such as Permatex Brake and
Parts Cleaner.
3. Remove cap and puncture tube seal.
4. Apply a continuous and even bead of silicone
(approximately 1/8” in diameter) to one surface, first
tracing the internal areas of the gasket configuration,
then all surrounding bolt holes as shown below:
5. Assemble parts immediately while silicone is still wet.

6. Secure or tighten to recommended torque
specifications.
Re-torque will not be necessary after the product has
cured.
For assembly as a gasket dressing
1. Repeat steps 1 thru 4 as in previous section.
2. Apply a thin film of silicone to one surface to be sealed.
3. Place the pre-cut gasket onto silicone film.
4. Apply a second thin to pre-cut gasket surface.
5. Remove any excess and assemble parts immediately.
Note: Product not recommended for use as a cylinder
head gasket or head gasket sealant.
For Cleanup
1. Replace the cap on the tube.
2. Remove uncured product from parts and hand-tools with
a dry cloth, if skinned over, break film with a dry cloth to
remove as much as possible, and remove the remaining
material with Permatex Gasket Remover as previously
stated.
3. Clean hands with a dry cloth or Permatex Fast
Orange hand cleaner.

TYPICAL CURING PERFORMANCE
Permatex Water Pump & Thermostat RTV Silicone Gasket
cures on exposure to moisture in the air. The product dries
tack free in one hour and fully cures in 24 hours. Cure times
will vary with temperature, humidity and gap.

Chemical / Solvent Resistance
The product retains effective properties in contact with
automotive fluids, such as motor oil, transmission fluids,
alcohol, and antifreeze solutions. Note: Not recommended for
parts in contact with gasoline.
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.

TECHNICAL DOCUMENTS
Permatex Water Pump & Thermostat RTV Silicone Gasket Maker Tds

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