On Thu, 18 Aug 1994, Greg Meboe wrote:
> Ditto Vern. When I saw HYLOMAR in the local autoparts store, I started
> using it exclusively. It's great stuff.
I've never seen Hylomar. Who makes it? What is it that makes you like
it so much?
> The problem with most Silicone products is that they are Room Temperature
> Vulcanizing, or in short, turn into a monomolecular substance that won't
> dissolve. This leads to roaming chunks of Silicone in whatever machine
> you have put together. When I'm at car shows, copious amounts of RTV
> Silicone sealer indicate poor assembly work, and make the car look bad.
I agree that it's no substitute for real gaskets and careful workmanship.
OTOH, RTV Silicone sealers _do_ have legitimate uses in old BritCars. For
example, it's the only satisfactory sealant I've found for the joint
between the rear oil seal housing and the rear main bearing cap in an MG-T
XPAG/XPEG engine. Nothing else works well. Of course, the oil seal
doesn't work well anyway (it's an Archemides screw arrangement, not a real
seal). The trick is to use it only where nothing else will work, and to
lay down a smaller bead than you thing you need.
> If by some odd chance I run out of Hylomar, I grab my old can of non
> hardening Permatex aircraft sealant. It's brown, smells good, and works
> almost as well.
That's Permatex #3, my long-time favorite.
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Chip Old 1948 M.G. TC TC6710 NEMGTR #2271
feold@umd5.umd.edu 1962 Triumph TR4 CT3154LO (daily transportation)
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