http://www.indanasteel.com/p-guards.php
, also identified as an aerosol shield or flange protector, is some sort of specialized safety device designed to contain leaks and spray-outs at flanged joint parts in piping techniques. These guards are usually manufactured using long lasting materials like PTFE, polypropylene, PVC, stainless steel, and polyethylene to withstand severe pressure, temperature, and even corrosive environments.