LincolnSteve said:

Hi. Can you help me get over my confusion about what product to use for sealing threads. I'm working on my steering box at the moment and the bolts for the bottom plate need something to seal them. The manual says to use Wellseal and I see it is available on ebay and not too expensive. Another option is something from the Loctite range. I already have some 270 thread lock and 75 retaining compound. I find the Loctite range far too complicated with the descriptions of the products all sounding the same also they are often very expensive. Last option is Blue Universal Hylomar. It says it can be used as a thread sealer and i've already got loads of that.

So what do you all use?

Thanks.

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BruceB said:

Wellseal is a product mainly used on bikes to seal cases as a sealant rather than a locking material etc, I use it on my classic bikes and it works well. Never seen it used as a thread sealer but doesn't means to say I am right about this.
Normally I would paint two coats on mating surfaces, leave till tacky and assemble.
Does the manual say how it is to be used?

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TheMegaMan said:

It seems to be these products to a different job - do you want to ensure nothing can ooze past the thread, or do you want to make sure the bolt doesn't come loose? If you're trying to make it oil-tight, Hylomar should do the job, but you might also want to use a spring washer, as it won't necessarily be fulfilling the thread-lock purpose so well.

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LincolnSteve said:

So does that lock and seal as well? I guess if it fills the threads to lock them in place it must stop anything coming through as well?

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