Subject: Re: Steam engines: Wooden lag o-rings

From: [email-masked] (Steve Rayner)
Date: Fri, 26 Jul 1996 10:39:36 GMT

Good grief!  Lagging is the insulation used on boilers, steam lines ( 
Pipes ), and cylinders. The metal cover that protects the lagging is called
the jacket, as in boiler jacket, or cylinder jacket.  British types call 
the jacket, cleading or cladding.  This has nothing to do with o-rings.
Wood lagging was used before the advent of superheating.  Even so, it had 
a short life, due to the heat.  Felt was also popular in the last century.
This was replaced by magnesia, and asbestos cloth/cement which would 
withstand superheat.
A cylinder, or boiler lagged with wood, and no jacket looks nice though. 
-- 
Steve.

**************  BE ALERT, THE WORLD NEEDS MORE LERTS ************************