Biopowered - vegetable oil and biodiesel forum
Biodiesel => Biodiesel equipment => Topic started by: Tony on July 18, 2012, 11:00:50 PM
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Julian very kindly gave me some foamed orange gasket material to try as a gasket on one of my 500l steel drums - was originally going to flip both (one is already to make the processor) but it might be nice on the 500l settle drum if I could have a large bottom access port for clearing glyc. If this material is up to it...
I've cut a strip and it's sitting in 100C bio + trace methanol as we speak - so going to find out if it can take the heat or not!
Anyway, cheers Julian, will see how it goes!
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It'll probably go quite soft.
I think the 'plastic' point of PVC is around 180°C, so it may hold up as a compressed gasket.
I believe I'm right in saying that PVC sweats bio, but again, it may be ok as a compressed gasket.
The results will be interesting.
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It has shrunk slightly and hardened a little. It's still flexible and doesn't show any signs of becoming brittle. I'll carry on subjecting it to the abuse expected of a settling drum gasket and take some photos.
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Sounds good but don't publicise it virtues too much ... I can't get any more!
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Do you remember what kind of material it is?
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Yes.
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It has shrunk slightly and hardened a little. It's still flexible and doesn't show any signs of becoming brittle. I'll carry on subjecting it to the abuse expected of a settling drum gasket and take some photos.
Hmmm,thought you were having a cold shower for a minute there
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It has shrunk slightly and hardened a little. It's still flexible and doesn't show any signs of becoming brittle. I'll carry on subjecting it to the abuse expected of a settling drum gasket and take some photos.
Hmmm,thought you were having a cold shower for a minute there
What happens in your shower ... isn't "shrinking slightly and hardening a little" something of a paradox?
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Not if its ingrowing!
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Not if its ingrowing!
That's a picture that'll need careful eradication from the mind of anyone wishing to retrain their sanity!
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Yes.
There's a tiny clue in the second post!
But to elaborate ... it's foamed, plasticised PVC, probably made by calendering rather than extrusion.
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Can't beat a bit of PVC if the results are anything to go by!
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I'm guessing this is the same stuff?
http://www.ebay.co.uk/itm/4-x-White-Plastic-PVC-Foamed-Sheets-195mmx1220mmx6mm-NOT-Perspex-or-Acrylic-/230695668374
The sample strip I cut has had a couple of treatments of hot Meth laden bio and is still holding out though it has shrunk a bit. This probably isn't an issue as a seal as it'll be compressed in use anyway. So it's looking useful as a decent filler gasket material.
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I'm guessing this is the same stuff?
http://www.ebay.co.uk/itm/4-x-White-Plastic-PVC-Foamed-Sheets-195mmx1220mmx6mm-NOT-Perspex-or-Acrylic-/230695668374
The sample strip I cut has had a couple of treatments of hot Meth laden bio and is still holding out though it has shrunk a bit. This probably isn't an issue as a seal as it'll be compressed in use anyway. So it's looking useful as a decent filler gasket material.
No, that's rigid (very common in the sinage industry) the stuff you have is plasticised i.e. flexible ... and a much cooler colour!
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Well many batches later it has hardened and shrunk a bit but will make a good bio seal, so it's going on my settle tank at the bottom to keep the bio in!
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Sounds like you've given it a fair test, glad it's holding up.
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Hi folks, I know its abit late but what about this stuff on ebay. Item no. 281022258322 . Teflon, good for 350 degrees C.
Sorry, not figured out how to post links.
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Here's the link http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=281022258322
Very interesting. Heat and oil resistant, and not too expensive either!