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Old 06-19-2019, 01:48 PM
Philip Yamron Philip Yamron is offline
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Annealer door seals

I'm wondering what are some of the ways the group has found to seal annealer doors? I am referring to 2 door front loading annealers. More specifically sealing up the gap between where the two doors meet, not the hinge side of the door.
I usually just create a narrow soft brick wall that the doors can close against to seal the door gap. (Saw this in a Hub annealer originally) It works fine but does impead on getting larger pieces into the oven sometimes.

Wondering what others do?
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Old 06-19-2019, 02:14 PM
Shawn Everette Shawn Everette is offline
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There is a refractory rope that usually acts as pretty good flexible overlapping seal between the doors. Without knowing more about the door construction it's hard to say if that would work for you. Those middle beams really get in the way sometimes.

Basically this, but I'd prefer a larger diameter.
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Old 06-19-2019, 02:48 PM
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Pete VanderLaan Pete VanderLaan is offline
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If the doors are yet to be constructed, make one of the doors with a lip on it, fashioned in such a way that the second door can close onto that lip. Seal that with fiberglass woven rope. This way, when the secpnd door is opened, nothing is blocking the center. If you need that space, pop door number one open and the closure will move out of the way.
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Old 06-19-2019, 03:10 PM
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David Patchen David Patchen is offline
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Google 'tadpole gasket'. They are similar to fiberglass rope, except that they have an extra piece of fabric that's easy to pin versus trying to get pins through the rope. It's what the major equipment manufacturers use. I don't know the exact one, but that's the type.
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Old 06-19-2019, 05:41 PM
Eben Horton Eben Horton is offline
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Quote:
Originally Posted by David Patchen View Post
Google 'tadpole gasket'. They are similar to fiberglass rope, except that they have an extra piece of fabric that's easy to pin versus trying to get pins through the rope. It's what the major equipment manufacturers use. I don't know the exact one, but that's the type.
Thatís what I would use as well
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Old 06-19-2019, 11:28 PM
Eric Trulson Eric Trulson is online now
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https://www.mcmaster.com/8815k32 <--- That's tadpole gasket. I just picked an arbitrary size, although it's in the right ballpark of what I'd use for an annealer door.

Note that the temperature range of the fiberglass ones top out around 1000F, so I would only use them for annealing ovens. For a fusing or casting oven, bump up to the silica fiber/inconel mesh tadpole gaskets.
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Old 06-20-2019, 05:36 AM
Philip Yamron Philip Yamron is offline
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Thanks everyone!
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