Visor 3 : The area of a totally encapsulating gas tight suits that allows the wearer to view his surroundings. Typically made of clear PVC; may have a Teflon overlay for added chemical protection
DuPont (The Miracles of Science), Literature & Technical Information, Industrial Personal Protection Glossary, Wilmington, DE, USA 2010http://www2.dupont.com/Personal_Protection/en_ HK/tech_info/glossary_industrial.html, (IndPP - Amer) {49}