Is the fel pro Tos18583 727 a good gasket that seals good? Whats some good 727 transmission pan gaskets?

Im using the oem mopar reusable one. Don't know the part number but any dealer parts dept. should know what it is.
I've never had a problem with any gasket name brand or not as long as the pan is flat.

Same here, have used it for many years and have reused it a handful of times without any issues. I think its Part Number 4295875AC but I'm not 100% certain.

I wanted the cork look for the resto, but also wanted a metal core to ensure it would stay put. I ended up with a Mahle gasket. Like this one.
https://www.jegs.com/i/Clevite-MAHLE/695/W39003TC/10002/-1?ymm=4294829710+4294829634+4294828937

If you are in Vegas, call Natpro, Part #22170LR. They have them in stock.

That's the 904 number, 727 is 2464324AC

Moroso blue with steel core. Best valve cover gaskets I've ever used, and it's the same design for the trans pans.

I like the oem reusable gasket. Never had a problem with that. Others, I've had a few leaks over time

Get one from a 48re its plastic with orings, been using the same one for 14 yrs, with many filter changes.

Im goin to try this felpro gasket i got free i had a gift card to autozone.this felpro gasket is made out of same gasket material like mopar performance one is.

I think that ANY decent quality pan gasket will work just fine ..., in my experience- most leaks are the result of a distorted pan rail and/or the over tightening of the pan bolts.

Yah I see.if it continues to leak I'll get the gasket from dealer like people are sayin and maybe a new pan.

If you the dealer type gasket do you use any gasket sealer with it? Has anyone used the mopar performance gasket which is part#3960855

Make sure the bolt holes are clean from any left over sealer. Debris in the holes will keep the bolt from tightening the pan down properly. I had a issue with leaks and it was because of that.

No, use the dealer gasket by itself. No sealer either.
As previously mentioned - with ANY gasket the pan has to have a flat flange.
Spend time on a flat surface plate and get the pan rail flat using a punch a little larger than the pan bolt hole size.
Lay the pan flange down, tap the hole flat. Check every hole.

Then flip it over and use a long straight edge to make sure the flange and those bolt holes are all flat.

Make sure every bolt hole in the case is clean with no debris in them.
Hand screw a bolt in each hole and make sure they go all the way in to the washer - I’ve seen guys chasing leaks to find out the bolt was too long, or the case had garbage in the hole.