Encyclopedia

lead wool

lead wool

[′led ′wu̇l]
(materials)
A coarse lead fiber used to caulk pipe joints.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

lead wool

lead wool applied as caulking
A wool-like material of fine strands of lead; sometimes used as caulking in pipe joints.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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References in periodicals archive
The railings are best held into position with lead wool that is tightly compacted around the post and into the hole in the wall, to tightly grip the rail.
Or you can buy a few pounds from someone who reloads his own shells, or use lead wool from a plumbing supply shop (about $2.25 per pound).
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