Should sealant be used on the blue Felpro w/p gasket - big block pump to pump housing ??

I use Gasket Cinch sealer adhesive on them when I use them

Usually they tell you in the instructions if included to use or not use sealant.

No

I've used this on water pump gaskets in the past.

https://www.permatex.com/products/g...ermostat-rtv-silicone-gasket-maker-5-oz/

Says here (*point 2) to use RTV with a fiber water pump gasket I just replaced not too long ago on son's car?

Oops I just re-read the instructions and it says to use RTV with a fiber gasket?

Take a good look at your sealing surfaces - after all these years, they may not be minty flat & smooth.
I'll generally use a light smear of wheel bearing grease, or Permatex #2, depending on the situation & fluids.
If I glue a gasket on - usually due to fussy installation or location - I'll glue it to the removable part.
That way, any subsequent cleaning or removal doesn't have junk falling into the engine.

I remember now I did use "International Gray" sealant and no leaks, no issues.

I always use the stinky gasket sealer.

Silicone/Rubber gaskets get nothing unless the instructions say to.

I use RTV on fiber gaskets to make removal easier later and for sealing. Just a thin smear. Just enough to hold it to the part and coat the surface.

Exceptions are Tranny gaskets get coated with trans fluid.

And

Cork/thick fiber Valve covers get RTV on the valve cover side and oil on the cylinder head side.

Served me well for many years.

This is what Permatex recommends:

www.permatex.com/products/gasketing...ermostat-rtv-silicone-gasket-maker-5-oz/

"This is what Permatex recommends:

www.permatex.com/products/gasketing...ermostat-rtv-silicone-gasket-maker-5-oz/"

I didn't read "big block Mopar" anywhere there.

Anyhow, I don't want to "make" a gasket, I just want to coat/seal the gasket.

Personally I don't think RTV and a cardboard gasket are meant to go hand in hand. I'm leaning towards the Permatex red stuff in the spray can. Wouldn't have even asked the question if I'd had the thing in my hand at the time.

Put it together dry. (With that gasket of course)

I use permatex Ultra black on most everything

The Permatex stuff both Dave and I posted is literally the best one they offer designed specifically to go up against glycol. You can make your own 'gasket' with it, or use it as a dressing on a gasket per #5 on the list on the webpage. Yes, you can use other substances, but they may or may not work as well as this one does in the long term.

Paper gaskets go on dry, with a thin smear around any areas adjacent to water that may show corrosion or pitting.

Same here.

I use the above Permatex Blue on everything that touches coolant (intake, thermostat housing, water pump/housing, hoses, etc.). It's kind of hard to find it anymore in stores in the larger tube, so I usually buy the smaller tubes and have them on hand.

Shouldn't WHAT fluid the gasket and sealant are sealing against be considered?

Personally, I never put any gasket on dry anymore. If nothing else, I use Permatex's version of Hylomar. But never dry. If you have good luck with gaskets sealing dry, then by all means keep doing it. But I got broke of that a long time ago.

Whoa, hold on
Permatex dropped that license years ago. Did they restart again?
I had to order a tube from England, but it is worth every penny.

with flat paper / fiber gaskets. I'll use KW coppercoat or brushable Permatex ( the purple stuff )

Permatex Permashield in an orange tube. Has been available on Amazon for at least a couple years that I know of.

Here ya go:

www.amazon.com/Permatex-85420-Perma...LBVA3aOuaLzIb7pIzUoVlT2CsQvu8fQct-MBURO-

www.amazon.com/Permatex-PermaShield...LBVA3aOuaLzIb7pIzUoVlT2CsQvu8fQct-MBURO-

Same stuff just different source and price.

Thanks.
Thats my mostly used sealant anymore.

no offense but they'd probably like to sell you a special sealant for everything 🙄🤣

So in my travels to the auto parts stores I noticed that some of the application specific stuff Permatex sells comes in smaller sized tubes. That means you get enough for the task at hand, and don't get stuck with a 3/4 full tube of leftovers after a repair project that just sits on the shelf and dries up. When looked at it that way it's less money wasted unless your replacing multiple water pumps every month as a tech. Then the bigger tubes are what you'd want to have around.

i have heard that storing tubes of sealant and glues in a refrigerator keeps them from going bad.
any truth to that ?
if so, i would be worried smells from them would permeate food items. would keeping that kind of stuff in a tupperware type container prevent that from happening ?

I always use a light coat of ultra grey silicone on them.

A lot of those sealants are more readily available because of the ISO (i.e., 9001 etc.,) and MIL specs standards. At work we had to use Loctite Gasket Eliminator and make sure we used the correct one for the correct application of either LGE 515, 518 or 5188 and several other types in case of an ISO audit. Just saying why there are so many variations now. They call it "International Grey" sealant for a reason.

I use that on thermostat housing with the stock composition gaskets, works good, last a long time

Haven't seen that stuff since I last built motors at my uncle's machine shop. I can smell it now. What I still use from those days is Permatex Aviation Form A Gasket on paper gaskets. I just remember that red stuff getting on everything after a while. The Aviation stuff brushes on, and it's impossible to use too much. I can't stand silicone, and I've seen many motors with chunks of that [censored] plugging passages. I remember pulling a crank out, and there was a chunk of that crap right in the main bearing oil hole.

The red Permatex stuff in both spray and brush is still on the shelves.
I really like that stuff for almost all apps.
Spray or brush it on, let it tack-up for a minute.
Excellent for machined surfaces, gas, oil or water.

Joe

Indian Head Shellac?

Cold will slow most chemical & biological reactions so it should help but exposure to air/moisture is the real kicker on these sealants.

I just keep the tubes capped and if the end hardens stick a screwdriver through the end to get the soft stuff. When that stops working I find a soft spot and poke though the side.

Pretty much what every body i know does..

I toss out less than an1/8th of a tube a year and I don't look back.

I would loose mine in the fridge.