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Gluing steel to polyethylene?

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Gluing steel to polyethylene? toller 08-15-2005
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Posted by toller on August 15, 2005, 12:40 am


I bought a 55 gal polyethylene drum to use as part of a swim platform. It
has two screw in plugs. One is poly and fits tightly. The other is steel,
and the thread doesn't even resemble the thread on the opening it was in;
though it is a very snug fit. I doubt I will get a good seal on it. Since
I will never open it, I would like to glue it in. I know nothing sticks
well to poly, but I am thinking JB Weld will fill in the thread spaces, and
lock the two together. But maybe silicone caulk would be a better bet.

Any thoughts on the best way to seal the metal plug in? It is about 3"
diameter and 1/2" of thread.

I bought it at an auction as part of a large lot with all kinds of other
good stuff for a dollar, and immediately sold stuff out of the lot for $3,
so it was a good buy even with the wrong plug.




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Posted by Greg O on August 14, 2005, 8:14 pm



>I bought a 55 gal polyethylene drum to use as part of a swim platform. It
>has two screw in plugs. One is poly and fits tightly. The other is steel,
>and the thread doesn't even resemble the thread on the opening it was in;
>though it is a very snug fit. I doubt I will get a good seal on it. Since
>I will never open it, I would like to glue it in. I know nothing sticks
>well to poly, but I am thinking JB Weld will fill in the thread spaces, and
>lock the two together. But maybe silicone caulk would be a better bet.
>
> Any thoughts on the best way to seal the metal plug in? It is about 3"
> diameter and 1/2" of thread.
>
> I bought it at an auction as part of a large lot with all kinds of other
> good stuff for a dollar, and immediately sold stuff out of the lot for $3,
> so it was a good buy even with the wrong plug.
>

Polyethylene is almost impossible to glue. Check around, best bet would be
to find somebody with the proper plug, assuming you have not fudged up the
treads on the barrel too badly.
If all else fails I may have one laying around.
Greg




Posted by Doug Miller on August 15, 2005, 1:10 am


>I bought a 55 gal polyethylene drum to use as part of a swim platform. It
>has two screw in plugs. One is poly and fits tightly. The other is steel,
>and the thread doesn't even resemble the thread on the opening it was in;
>though it is a very snug fit. I doubt I will get a good seal on it. Since
>I will never open it, I would like to glue it in. I know nothing sticks
>well to poly, but I am thinking JB Weld will fill in the thread spaces, and
>lock the two together. But maybe silicone caulk would be a better bet.

Better bet still would be to find a plug of the right size. Why are you so
determined to cobble things together? It's a lot less trouble in the long run
to do it right, ONCE.

--
Regards,
Doug Miller (alphageek at milmac dot com)

It's time to throw all their damned tea in the harbor again.


Posted by Richard J Kinch on August 15, 2005, 1:45 am


toller writes:

> Any thoughts on the best way to seal the metal plug in? It is about 3"
> diameter and 1/2" of thread.

Replace it with a PVC plumbing plug and use PTFE tape. Standard drum bung
holes are just NPT pipe thread.


Posted by toller on August 15, 2005, 1:19 pm



> toller writes:
>
>> Any thoughts on the best way to seal the metal plug in? It is about 3"
>> diameter and 1/2" of thread.
>
> Replace it with a PVC plumbing plug and use PTFE tape. Standard drum bung
> holes are just NPT pipe thread.

Didn't know that; I will check that out. Thanks.




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