The best cast iron handle covers are made of thick materials like leather or silicone to provide protection from hot handles, and are easy to grip. MENU. Life. The 3 Best Cast Iron Handle Covers.

In addition, although cast iron stands up to heavy loads and severe impacts, it is very heavy — the density of a cast-iron manhole cover can be as high as 450 lb/ft 3 (7,208 kg/m 3). A small ...

But what a cover. Two feet across, about two inches thick, solid cast iron. While there are other suppliers, many Chicago covers originate here, in the sprawling, loud Neenah Plant No. 2, the main ...