I received it yesterday and it looks pretty good. So I tried it with plain water and found that the gasket doesn't really like to seal. If water comes to a boil, steam seems to sneak out along the top of the gasket. Apparently the escaping steam keeps the pressure from building up enough to push the water up into the top chamber. I tried cleaning it and pushing it tighter against the top. No dice.
Does anyone have any genius fixes for this, or is it destined for the junk heap (or just my re-selling on Ebay)?
mnmrobinson Junior Member Joined: 12 Sep 2008 Posts: 3 Location: Dallas Expertise: I love coffee
Posted Fri Sep 12, 2008, 5:31am Subject: Re: Leaky Gasket on Nicro Vac Pot
Hi there. I sent you an email about this. I can't help you to "seal" the existing gasket, but I recently made my own gasket for the same pot out of a silicone rubber base. Worked like a champ.
This is the mold I made. I simply chose a plastic cup that was the size I wanted. Cut it and taped it to the top bowl. I used a silicone rubber base that I have access to. It is made by Dow Corning.
Posted Mon Sep 15, 2008, 5:29am Subject: Re: Leaky Gasket on Nicro Vac Pot
Welcome also to the Coffeegeek forums Michael! {;-)
Thats's a great link to Dow Corning for anyone else here wanting (& there's more than a few!) to fabricate a silicone vacuum pot gasket, & cheaper than the alternative for the Silex small mouth vac pot.
mnmrobinson Junior Member Joined: 12 Sep 2008 Posts: 3 Location: Dallas Expertise: I love coffee
Posted Wed Sep 17, 2008, 3:51am Subject: Re: Leaky Gasket on Nicro Vac Pot
Unfortunately, I don't know where you can get Silastic J or how much it costs. We use it where I work, so I just mixed up a little extra while I was mixing it for a project. When it is mixed, it is the consistency of molasses. After it is mixed, it needs to be put in to a vacuum chamber to get the air out of it. The Silastic is extremely tolerant to heat. We us it in 200 degree celsius conditions. It also is very durable. I don't know off the top of my head what other silicone rubber out there that you could get at Home Depot or Lowes. I would think there would have to be something there though.
When using Silastic, there is no need to apply anything to the metal or the plastic cup. Once it is cured, a little rubbing alcohol allows the cup to be removed easily and then the new gasket is able to be removed off of the metal with no problem.
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