What's new
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.

what color RTV for gaskets... which ones dont eat up the metal

jjlaughner

jjlaughner

3/4 ton status
 Premium
Joined
Jan 12, 2001
Posts
7,407
Reaction score
2
Location
Indiana
what color RTV for gaskets... which ones dont eat up the metal

I have a brush on gasket maker from John Deere I use when I have a gasket of some type. I'm thinking for the diff covers laying a bead around the bolt holes and then a wide bead between the holes and letting it setup over night before installing. Anyone done this? /forums/images/graemlins/ears.gif
 
I am starting to use the Ultra-black stuff. Really just ran out of the regular gasketmaker tube sometime last year. Havent had anything eating up metal /forums/images/graemlins/thinking.gif .... have been using it to seal my oilpans and valve covers with no ill effects on the engines or ECM/sensor mumbo-jumbo.
 
Use blue RTV on diff covers. Make a circle around all the bolt holes and then connect them like you said. But, only let the blue RTV set up for around 10-15 minutes...definitely not over night.
 
i used to like the blue, but after i took my hubs off and the PO used it instead of an oring and it ate up the metal, i don't use it very much anymore

im starting to like the black stuff though.
 
[ QUOTE ]
You mean The Right Stuff?? yeah that is the shiznit.



[/ QUOTE ]

agreed /forums/images/graemlins/thumb.gif
 
I've been told the black stuff is the most resistant to oil.
(seal failure due to oil contact/ dirty surface when making seal, or general breakdown over time).

could someone please explain the blue rtv breaking down metal???? it's just silicone based right??? /forums/images/graemlins/thinking.gif
 
yeah but the silicon contains salt or acids and it pits the sealing surface. I usually use red for everything mainly because thats usually what I have. Never really had any problems with it either. I just couldn't remember which was which. Looks like the blue stuff is the one I want to avoid. I think I have a black RTV and some red left if its not dried up.

What about the copper RTV is that for mainly intakes or hot areas?
 
I have started using Ultra Grey. Seems to work well. I usually use Ultra Black for Diff covers, Ultra copper for everything else. Blue I use mostly for water pumps, tstats, etc.

I used Ultra Grey for my tcase reseal because Ultra copper got eaten by ATF.

Harley
 
went to the the permatex site...

[ QUOTE ]
Permatex® the Right Stuff® Gasket Maker

--------------------------------------------------------------------------------
Return equipment to service immediately when you make leakproof gaskets in just one minute with the Right Stuff.® This latest elastomeric rubber gasket technology is blowout resistant and outperforms pre-cut gaskets. Specified on production lines by GM, Ford, Daimler-Chrysler and Mercedes-Benz. Temperature range -75°F to 450°F; (-60°C to 232°C) continuous, 500°F (260°C) intermittent; resists ATF, coolant, oil and other shop fluids. Protects against leaks caused by vibration and thermal expansion. Sensor-safe.

Suggested Applications:
Automotive and marine gaskets, valve covers, gearbox covers, pumps, compressors, oil pans, thermostat housings, water pumps

[/ QUOTE ]

[ QUOTE ]
PERMATEX® ULTRA BLACK® Gasket Maker

--------------------------------------------------------------------------------
For dealership warranty requirements, insures extended drivetrain warranties compliance. Fast-curing formula. Sensor-safe, low odor, non-corrosive. Meets performance specs of OE silicone gaskets. Retains high flexibility, oil resistance properties through use of a patented adhesion system. Temperature range -75°F to 625°F intermittent; resists auto and shop fluids and vibration. Also available in AUTOMATIC TUBE® dispenser.

Suggested Applications:
Valve covers, oil pans, intake manifold end seals, timing covers, transmission pans

[/ QUOTE ]

[ QUOTE ]
PERMATEX® ULTRA GREY® Gasket Maker

--------------------------------------------------------------------------------
Designed for high torque applications (predominantly Japanese designs) requiring a unique RTV gasket. Exceeds manufacturers’ performance requirements. Low odor, non-corrosive. Outstanding oil resistance. Guaranteed not to leak. Temperature range -75°F to 625°F intermittent; resists auto and shop fluids and vibration.

Suggested Applications:
Valve covers, oil pans, intake manifold end seals, timing covers, water pumps, thermostat housings

[/ QUOTE ]

[ QUOTE ]

PERMATEX® ULTRA COPPER® Hi-Temp RTV Silicone Gasket Maker

--------------------------------------------------------------------------------
For 4-cylinder, turbocharged or high-performance engines. The most advanced, high temperature RTV silicone gasket available. Sensor-safe, low odor, non-corrosive. Superior adhesion. Three times more oil resistant than conventional silicones; eight times more flexible than cut gaskets. Temperature range -75°F to 700°F intermittent; resists auto and shop fluids and vibration.

Suggested Applications:
Exhaust manifolds/headers, valve covers, oil pans, timing covers, water pumps, thermostat housings

[/ QUOTE ]

[ QUOTE ]
PERMATEX® Sensor Safe Blue RTV Silicone Gasket Maker

--------------------------------------------------------------------------------
The original Blue. Will not foul oxygen sensors. Replaces almost any cut gasket. Makes reliable "formed-in-place" gaskets that resist cracking, shrinking and migrating. Coats pre-cut gaskets to increase reliability. Temperature range -65°F to 500°F intermittent; resists auto and shop fluids. First generation 1970-1980 gasket maker. Also available in AUTOMATIC TUBE® dispenser.

Suggested Applications:
Valve covers, oil pans, timing covers, water pumps, thermostat housings, transmission pans

[/ QUOTE ]

[ QUOTE ]
PERMATEX® ULTRA BLUE® No Leak RTV Silicone Gasket Maker

--------------------------------------------------------------------------------
PERMATEX® Ultra silicones were developed to meet today’s technology changes. Sensor-safe, low odor, non-corrosive. Outstanding oil resistance and joint movement values. Eight times more flexible than cork/composite gaskets; three times more oil resistant than conventional silicones. Temper-ature range -75°F to 500°F intermittent; resists auto and shop fluids and vibration.

Suggested Applications:
Valve covers, oil pans, timing covers, transmission pans, differential covers

[/ QUOTE ]


/forums/images/graemlins/thinking.gif none of these say avoid such and such metals
Doesn't even list the red type
 
[ QUOTE ]
I used Ultra Grey for my tcase reseal because Ultra copper got eaten by ATF

[/ QUOTE ]

HMMMM /forums/images/graemlins/thinking.gif I've been using ultra copper on everything for about a year now including my tranny pan and t-case adaptor. Haven't had any issues yet /forums/images/graemlins/dunno.gif
 
I noticed the regular blue stuff doesnt say "non corrossive"in the listing --while the others did,this leads me to beleive the"non corrosive" ones wont eat the metal.I know of one person who used the regular blue silicone to seal his leaky windsheild a few years ago--now you can put your hand in the holes in the cab where he sealed it!. /forums/images/graemlins/yikes.gifI guess the vinegar they warn you about on the package makes a good acid that will eat the metal after time--probably not much of an issue if its drowned in oil all the time,like a valve cover though. /forums/images/graemlins/crazy.gif
 
You must log in or register to reply here.

Latest Posts

Top Bottom