Caulking the Firebox SeamSaturday, December 11, 2010 by MC
In riveted steel boiler construction, caulking is the process of rendering a seam watertight by driving a thick, blunt chisel-like tool into the plate adjacent to the seam. This has the effect of displacing the metal into a close fit with the adjoining piece. We use a pneumatic hammer to caulk the boiler seams. It is a noisy and tiring process.
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