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Your cart is empty.Permatex High Tack Gasket Sealant is a fast-drying all-purpose sealant that dries to a highly tacky, non-brittle film. A reliable general adhesive remains tacky indefinitely - can be applied in advance for convenience in assembly. Remains effective at temperatures of -65°F to 500°F (-54°C to 260°C). Sensor-safe and resistant to gasoline, oil, antifreeze, axle lube, kerosene, propane and butane.
Customer
Reviewed in the United States on February 26, 2025
Old time product for an old time guy
Customer
Reviewed in the United States on February 26, 2025
Great gasket sealant. Used to replace the seals and gaskets in an outboard foot.
Artie m snell
Reviewed in the United States on February 23, 2025
Worked well for the price
Customer
Reviewed in the United States on January 4, 2025
Arrived on time and as advertised. Used this on a stator case gasket. Had no pins to help line it up so with being tacky, it worked very well. Ended up with no drips, runs or leaks.
John
Reviewed in the United States on January 23, 2025
this is really good I used when I did my thermostat housing it is tacky and holds the gasket in place but not does not dry like the rubber type I have used in the past. this is a really good product I will be using again
orange
Reviewed in Japan on May 18, 2024
ビンテージカーの燃料パイプジョイントやガラスボール燃料フィルターガスケット(ゴム)などに塗布馴染みや漏れが止まりました
Customer
Reviewed in Canada on February 8, 2024
Works great, just as described, perfect for holding valve cover gaskets to the cover while installing
Customer
Reviewed in Canada on February 23, 2024
Works great, the brush built in the lid is awesome
Truth Seeker
Reviewed in the United States on December 13, 2024
Bought this product to seal around oil pan. Worked great, growth seal. Not messy like other products. Easy to use. Highly durable. Will purchase again
Mike in PA
Reviewed in the United States on April 14, 2024
My axle seals in my 1993 F-150 failed and leaked over my brakes, so a repair was needed. That meant draining the rear differential in order to gain access to the axle. There are many schools of thought regarding how best to re-attach the cover to the differential once the work is done. Options include: RTV only, gasket only, gasket with RTV and gasket with this high tack sealant.It seems the preference has moved to using RTV only especially in newer vehicles. That may be related to manufacturing processes and the simplicity of having an automated tool dispense the RTV as the axle moves down the line. Keep in mind that the differential is likely facing upwards during the manufacturing process to facilitate the RTV application. In the real, shade tree mechanic world, this rarely happens. The surface is vertical and presents minimal challenges, but one can still mess it up if not careful.I’ve used RTV only in my 2014 F-150 and have evidence of minor seepage. That’s on me, as it was the first time that I ever used RTV only, as that was the OEM process. In contrast, my 1993 had a gasket and likely an adhesive. It was a bear to clean, as I had to scrape its remnants from both surfaces. I replaced the fluid in 2018 and used a gasket and RTV. Reading further into the best practices, some folks commented that a gasket and RTV should never be used together. I wish I read that earlier, as there was evidence of minor seepage beyond the gasket.I then took a deep dive into the F-150 forums and found someone who had suggested using a gasket with Permatex High Tack Gasket Sealant. He noted the sealant doesn’t harden or cure, so re-servicing is slightly easier. I opted to give this a try, and I’m glad I did. I made sure both surfaces were free of gasket, grease, dirt and RTV. A light sanding on each surface was followed by a wipe with brake cleaner. Make sure the sump in the bottom of the differential is empty, or at least not near the edge, as it may wick over and drip on the bottom surface and render your seal useless.As I noted above, there are multiple suggestions as how to apply this to the surfaces and gasket. Here’s what I did. I laid the cover flat and applied the sealant to the sealing surface. The sealant has a brush. I ensured there was a good coating especially where the gasket would be in contact with the cover. I then applied the gasket to the cover. The sealant holds the gasket in place, so make sure you align the holes. This sealant is unique in that it gets stringy when exposed to air. I found it best to work quickly and not to go over areas multiple times to avoid clumps. I then applied the sealant to the other side of the gasket, that is the side that’s against the differential surface. It was just easier for me this way, as I was working on the ground. You can likely add it to the differential if you’re working with a lift. Excess towards the inside of the cover, and therefore differential, can be wiped after the gasket is laid on the cover.I carefully aligned the cover, added 1-2 bolts to hold it in place and then torqued all 10 bolts to 30 ft lbs. I don’t think there is any cure time with this product, but seeing as I had other things to do, I left the differential empty until it was my last task. That was about 1-2 hours later. There are no leaks, so this will be my preferred method going forward with this truck. Good stuff.
gothicman02
Reviewed in the United States on August 16, 2023
I debated on this or your regular silicone RTV for my rear differential with a gasket, but seeing it here for the price along with the benefit of it being easier to remove with solvent, it was a no brainier for me. It works great for seals and gaskets without the silicone "bonding" to the metal for the next guy down the road to clean up. Best of all, it remains tacky even when dry, so it can be "reformed" if needed vs RTV silicone. Another upside is that it is in a sealed can vs the RTV tubes that always have a tendency to dry up due to the plastic caps always cracking, forcing me to buy moreThe only downside is that it is so tacky, it can make a mess if you aren't careful, leaving "spider webs" everywhere. Try to work in a cooler, room temperature environment if you can vs 95 F weather.
Parker Myschuk
Reviewed in Canada on June 8, 2023
I love this stuff, personally I wouldn’t ever use any gasket sealer other than this stuff. It’s very messy and can be a little difficult to apply, but it has never failed me. wear gloves it’s possibly the stickiest substance known to man.
Mr W.
Reviewed in the United Kingdom on November 1, 2023
Used on a rocker cover but was too slippery to hold gasket which slipped and deformed upon tightening. Used Wellseal instead which was tackier.
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