Anybody have any opinions on this sealant?

Slantyface

Slantyface

Been Around the Block
I've got a pesky oil pan leak on my 78 cb550 that keeps on bugging me even after I've changed the gasket (o-ring). I was wondering if anyone has used the Permatex 80019 Form-A-Gasket No. 3? The reviews seem pretty solid, but it'll be used in a hot spot to seal hot oil. I've also heard good things about Hylomar, but it's considerably more expensive. Any opinions?
 
loctite 515 or 518, nothing better period
but it is all about preperating the surfaces and letting it cure fully
 
Hylomar is the best. period. I got my first tube when I worked on Rolls Royce aero engines about a thousand years ago - or at least it seems that long ago.

I prefer it for metal to metal joints where there is no gasket or on surfaces where I need to remove a cover later and I don't want it to stick too tight.
 
teazer said:
Hylomar is the best. period. I got my first tube when I worked on Rolls Royce aero engines about a thousand years ago - or at least it seems that long ago.

I prefer it for metal to metal joints where there is no gasket or on surfaces where I need to remove a cover later and I don't want it to stick too tight.
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hahahahah get out of the steam age ! 518 is so much better it ain't even funny
 
Insolent swine. If Hylomar was good enough for RR then it's good enough for me. Good day to you Sir. ;-)

In retrospect, the reason I liked it was probably that back in the day it was the only thing that kept most of the oil inside my Triumph twins. Different material than 518, and good to 572C in one grade at least - where Loctite is rated at 82C on water systems and no data I could find on upper temps on other things.

For a relatively low temperature casing like a crankcase cover 518 should be fine. For a cambox, I'd like something rated for over 200C - not that it gets that hot in operation but it's good to build in a margin of safety.
 
I use them both. Never had an issue with either. I tend to use the Hylomar on things I expect to be apart more often.
sometimes I use Hylomar with a gasket on the side I don't want the gasket to stick to like an engine side case cover. Never use either of these materials with a gasket that will see any pressure behind it. If there is a weak area where the clamping pressure is low, the gasket can slip out from between the parts over time. I also tend to use the Hylomar for high temp applications or joints I think are more suspect. I have no reason for that preference; I have never had a leak with either - both are superb. But then again, its all about the prep and using the right material for the right application.
 
We use Hylomar at work (I work for ze Germans). Holds up through some of the worst conditions you could ever put a machine through. Just sayin.
 
At the machine shop we use DOW 832 or 735 to seal the collets from chips. Works well on oil pans also. 735 is specific for oil applications. Silicon products in general hate oil, but these two are excellent and take up a lot of surface error.
 
Threebond is what the mfg's use. Threebond makes Yamabond, Hondabond, etc. Stcik with the Threebond...Rumor has it that Sonreir has more Threebond then he can use in his lifetime....He can cut you a deal on a tube. ;)
 
True story.
 

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Good Lord that Threebond...
I'll just buy all of the things mentioned in this thread and make a cocktail. I'll even throw in some super glue for good measure. That should get it. Just kidding. But thanks for all the recommendations guys. It gives me more knowledge on the subject.
 
loctite 518 is the most versatile and best bang for the buck, you can use it as a medium thread locker and as a thread sealer ,flange sealer, gasket eliminator,gasket repair and it works better than anything else on the machined gasket-less surfaces it does not harden when squeaszed out of a joint it is anerobateted(anerobic)
 
Hey guys, while you're talking about this... I'm going to start a tear down of my '78 CB550k, and it's my first go at it. I'll definitely look into Loctite 518, but what's confusing to me is WHEN I'm supposed to use a sealer or just go dry. Do I add anything to the head gasket surfaces when I replace it? Do all gaskets get a sealer of some kind? On both sides?


---
1978 Honda CB550K
 
DaveBarbier said:
Hey guys, while you're talking about this... I'm going to start a tear down of my '78 CB550k, and it's my first go at it. I'll definitely look into Loctite 518, but what's confusing to me is WHEN I'm supposed to use a sealer or just go dry. Do I add anything to the head gasket surfaces when I replace it? Do all gaskets get a sealer of some kind? On both sides?


---
1978 Honda CB550K
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Gaskets go on dry.
You only use a sealer if you spring a leak, there is no gasket there (like the cases),or you decided for some reason not to use a gasket.
 
mydlyfkryzis said:
Threebond is what the mfg's use. Threebond makes Yamabond, Hondabond, etc. Stcik with the Threebond...Rumor has it that Sonreir has more Threebond then he can use in his lifetime....He can cut you a deal on a tube. ;)
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Do they make kawabond? Do they have different formulations for each manufacturer?

I switched from using yamabond and hondabond to kawabond as I like the consistency better, and it's stickier so it stays in place better.
 
There are different formulations so I suspect all of them are threebond originally. I am using threebond 1104. One of the differences is there is no lead in it so it can be sold 8 California.

Sent from planet Earth using mysterious electronic devices.
 
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