Astro_Al Posted January 16, 2009 Share Posted January 16, 2009 Not actually for a L/R, but what can people recommend for making my own shaped gaskets for a high temperature application? Where can I buy something cheapish and quickish? Cheers, Al. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 16, 2009 Share Posted January 16, 2009 How high temp? Loctite's tech support are very helpful for that kinda thing. Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted January 16, 2009 Author Share Posted January 16, 2009 Hmm, thats the prob, I dunno yet! How hot does a head gasket get? Any idea how hot cork gasket can go to? Ta, Al. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 16, 2009 Share Posted January 16, 2009 Head gasket? WTF? Quote Link to comment Share on other sites More sharing options...
Mark Posted January 16, 2009 Share Posted January 16, 2009 Al, what sort of thickness do you want? Leeside Tools in Yapton sell gasket paper by the roll. Not sure if that is high temperature enough for you? Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 16, 2009 Share Posted January 16, 2009 RS components sell gasket material in all different flavours, but I thought head gaskets were usually a bit more than just tin foil with the right holes in? Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted January 16, 2009 Author Share Posted January 16, 2009 Its not actually FOR a head gasket, I just wondered if it was a similar temperature. Its to seal a bit of cast iron against a water tank. The other end of the iron (20" away) will be f'ing hot, the water tank end less so. So I have no idea what temp it'll be! Maybe I don't need the corky / papery bit and I can just throw some liquid style gasket in (high temp stuff). The mating surfaces are pretty rough though. Cheers, Al. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 16, 2009 Share Posted January 16, 2009 Is it under pressure? If it's heating water then I'd assume the contents won't be going much higher than 100C Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted January 16, 2009 Author Share Posted January 16, 2009 A little air pressure, nothing like a turbo. The other end of the piece is over 1000 deg C, so who knows what the temp of this bit will be??? Al. Quote Link to comment Share on other sites More sharing options...
dollythelw Posted January 16, 2009 Share Posted January 16, 2009 silicone it Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted January 16, 2009 Author Share Posted January 16, 2009 Really? How hot is that good to? This thing is going to be hot for long periods / frequently. Wouldn't silicone eventually sag/run out of the joint? Al. Quote Link to comment Share on other sites More sharing options...
dollythelw Posted January 16, 2009 Share Posted January 16, 2009 doubtful - Ive used it on downpipes with nice fruity EGTs and had no probs, the labs chimney flue is siliconed up and that gets hot enough to fry body hair (obviously not Chuck Norris's beard) at a couple of metres if your 1000c is 20 feet away it'll be happy as larry Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted January 16, 2009 Author Share Posted January 16, 2009 if your 1000c is 20 feet away it'll be happy as larry Agreed. Sadly though its 20 inches away. And its more than 1000 C. Anyway, ta for that, I might try some of that low modulus silicone they do for stoves etc. At least it should be good with the rough surfaces. Ta, Al. Quote Link to comment Share on other sites More sharing options...
dollythelw Posted January 16, 2009 Share Posted January 16, 2009 B&Q plop seemed to survive on the manifolds but if you're feeling flush grab some of the Wurth stuff - sorry misread the inches and feet thing, that new fangled metric will never catch on Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 16, 2009 Share Posted January 16, 2009 You can get really nasty hi-temp silicone from motor factos, it's black and spensive (£10+ per toob) but sticks most things to most other things and is good for high temps. Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted January 16, 2009 Author Share Posted January 16, 2009 Cool, I don't mind paying a few quid if it'll last. I know I'm stuck in the dark ages with my units Mr Dollypetal - just for you, with all your whizzy-techno-knowhow, I've discovered it 0.83 light-nanoseconds. Al. Quote Link to comment Share on other sites More sharing options...
dollythelw Posted January 16, 2009 Share Posted January 16, 2009 you mean 0.0252525 chains? why didnt you just say that Quote Link to comment Share on other sites More sharing options...
Les Henson Posted January 16, 2009 Share Posted January 16, 2009 If you have to make a gasket, then sheet alloy or copper. If you just want to effect a seal in a high temperature environment where the mating faces are in good condition, then exhaust sealant, such as Gun Gum or Fire gum would do the job. Head gasket is a pressure gasket, not a high temperature gasket with the exception of the fire rings, which have to tolerate combustion temperatures, and they are generally steel. A head gasket only has to withstand combustion pressure and engine running temperature (about 90-degC - max). Exhaust temperature gaskets are steel/heat resistant resin sandwich normally, and older gaskets were copper/asbestos sandwich. The resin or asbestos was only there to effect a tight seal between the two parts and the steel/copper to allow the gasket to deform to do the job it's designed for. Les. Quote Link to comment Share on other sites More sharing options...
bow Posted January 16, 2009 Share Posted January 16, 2009 when i was in maintanance for a fried food producer we used to use a cord gasket seal, available in loads of sizes, this stuff was good for very high temp's, would seal any surface, could be used for heat and steam, cant recall what it was called though, some more enlightened folks on here may know though, hope this of some use BOW.. Quote Link to comment Share on other sites More sharing options...
dollythelw Posted January 16, 2009 Share Posted January 16, 2009 is that the same stuff you use on pyrex glass inspection panels for burners etc Bow? sortof ropey fabric stuff? I wouldnt mind getting hold of some of that Quote Link to comment Share on other sites More sharing options...
muddy Posted January 16, 2009 Share Posted January 16, 2009 Any woodburner/stove shop should sell the chord stuff as it needs to be replaced reasonably often on a burner, will most likley be expensive but last time i looked the 'van' had a 50m roll in the back so if you befriend the driver.... Quote Link to comment Share on other sites More sharing options...
Les Henson Posted January 16, 2009 Share Posted January 16, 2009 High temp fibreglass rope - 6mm - 10mm http://www.topsealing.com/fiberglass_therm...rglass_rope.htm Silica rope 3mm upwards http://www.topsealing.com/high_silica_ther...silica_rope.htm Ceramic rope - 6mm upwards http://www.topsealing.com/ceramic_thermal_..._fiber_rope.htm Les. Quote Link to comment Share on other sites More sharing options...
dollythelw Posted January 16, 2009 Share Posted January 16, 2009 Thanks gents - much apprecitated Quote Link to comment Share on other sites More sharing options...
Astro_Al Posted January 16, 2009 Author Share Posted January 16, 2009 Thanks guys. Dollypetalsweetheart, I could use a couple of metres of that stuff for my stoves so let me know if you order any... Cheers, Al. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted January 16, 2009 Share Posted January 16, 2009 when i was in maintanance for a fried food producer Can I have a 1/2lb cheeseburger with fries and a side order of salad. Is there a free drink with that? If so, could I have Coke please. Dollypetalsweetheart Is this Tuesday? Les Quote Link to comment Share on other sites More sharing options...
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