Non-metallic hole plug
Non-metallic hole plug
(OP)
I have a 1.5 inch through hole (not tapped) in a 1.5 inch thick painted steel plate that I need to plug. The plug must be able to be installed under water. The plug must cover the hole from both sides, but does not have to be water tight. It is preferred that the plug be a non-metallic material. The plug also must not sit proud on the plate. I am trying to brainstorm a simple solution here, but am not coming up with anything. Any ideas are welcome!





RE: Non-metallic hole plug
RE: Non-metallic hole plug
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Non-metallic hole plug
ornerynorsk - since the hole is in a rotating part, I would be worried that friction would not be enough to hold the plug in place.
RE: Non-metallic hole plug
RE: Non-metallic hole plug
Are there any features on the hole? chamfer, slight counterbore, extraordinarily rough finished bore, etc
Could there be?
http://www.yankeemarinediving.com/MyImages/underwa...
http://www.loctite.sg/sea/content_data/168612_FIXU...
http://www.mbca.org/sites/default/files/7009016_Fr...
http://outdoorpowerinfo.com/repairs/images/kohler_...
To secure the Plug drill and tap a hole for a set screw axially into the joint between plug and plate. Sometimes called a dutchman, although Google was unable to dredge up a picture of one. I did find a reference to installing a pin that way.
http://www.roton.com/eng_bul_964.aspx
RE: Non-metallic hole plug
http://www.brownwoodinc.com/industrial/pipe-plugs....
et al.
RE: Non-metallic hole plug
RE: Non-metallic hole plug
A straight cylindrical wooden plug with low moisture content, driven in, should expand nicely once it gets wet, and stay in for a long time, unless it's then allowed to dry out.
Mike Halloran
Pembroke Pines, FL, USA
RE: Non-metallic hole plug