When opening a transmission for service, what's the best choice for sealing it on reassembly? I've read/heard recommendation to use a product such as Permatex Blue RTV Silicone Gasket Maker. Or is cutting a new gasket of cork a better choice?
Transmission gaskets
- Thread starter DADoES
- Start date
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When opening a transmission for service, what's the best choice for sealing it on reassembly? I've read/heard recommendation to use a product such as Permatex Blue RTV Silicone Gasket Maker. Or is cutting a new gasket of cork a better choice?
potatochips
Well-known member
- Joined
- Sep 9, 2016
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- 545
Id try either of those, but Id choose cork over the goo as nothing is better than a cut to fit gasket. In an industrial application I have experience with Garlock gasket material. They make rubber or compressed non asbestos gaskets which are excellent to use in general purpose applications, can handle lots of heat and pressure nicely. Something else worth considering.
https://www.garlock.com/en/products/utility-grade-gasketing
https://www.garlock.com/en/products/rubber-gasketing
https://www.garlock.com/en/products/utility-grade-gasketing
https://www.garlock.com/en/products/rubber-gasketing
Transmission Gaskets
If the cover was glued on originally such as a WP DD transmission differently reassemble it the same way, the thickness of a gasket will cause the cover to bend and could cause aliment problems.
On WP BD and older MT Pittman style transmissions these transmissions originally used cork gaskets but the manufactures both switched to paper gaskets LONG ago and the paper gaskets worked a lot better.
Cork would usually be my last choice and probably the poorest performing material as well, there are so many other good gasket materials out there if you have to make your own.
John L.
If the cover was glued on originally such as a WP DD transmission differently reassemble it the same way, the thickness of a gasket will cause the cover to bend and could cause aliment problems.
On WP BD and older MT Pittman style transmissions these transmissions originally used cork gaskets but the manufactures both switched to paper gaskets LONG ago and the paper gaskets worked a lot better.
Cork would usually be my last choice and probably the poorest performing material as well, there are so many other good gasket materials out there if you have to make your own.
John L.
It's a WP DD transmission circa 1999. Need to install a neutral drain kit. Should the oil be changed?
WP DD transmissions
Differently NO gasket, just use RTV type sealant, I would change the oil unless it looks clear and clean.
john L.
Differently NO gasket, just use RTV type sealant, I would change the oil unless it looks clear and clean.
john L.
Allrightythen, thanks!
I also found a video on YouTube of a repair guy doing a neutral drain kit. He changes the oil, and uses Permatex Ultra Black (which says "maximum oil resistance"). I bought Permatex RTV yesterday but can exchange it for the Ultra Black.
mickeyd
Well-known member
Hi Glenn ~
I swear by the Miracle Blue Goo; it works like Magic. Follow the cure length instructions--as if you would not, (ironic smile).
I swear by the Miracle Blue Goo; it works like Magic. Follow the cure length instructions--as if you would not, (ironic smile).
mickeyd
Well-known member
RE: Email queries.
Permatex Blue RTV Silicone Gasket Maker * IS * Miracle Blue Goo. One and the same. Just the nick name I've called it for decades. I'm sure it comes in many brands, but they all look and smell and seal the same--flawlessly. Excuse the confusion--must have had too big a sniff!
Permatex Blue RTV Silicone Gasket Maker * IS * Miracle Blue Goo. One and the same. Just the nick name I've called it for decades. I'm sure it comes in many brands, but they all look and smell and seal the same--flawlessly. Excuse the confusion--must have had too big a sniff!
