Non-medical masks and parts therefore made of rubber, synthetic rubber or of plastics; respirators and parts therefore made of rubber, synthetic rubber or of plastics other than for artificial respiration; protective headgear, namely, protective hoods, protective hats and helmets which are worn with air purifying respirators; protective hard hats and helmets; protective hoods and portable protective hoods to enable the wearer to escape from chemically, biologically, radiologically and nuclear threatening situations; smoke hoods; protective eyewear; protective safety goggles and masks; optical lenses, eyeglass lenses, ophthalmic lenses; eyeglasses; optical apparatus and instruments, namely eye pieces and lenses; and parts of the aforesaid; protective gas masks; respiratory protection products, namely, air purifying respirators other than for artificial respiration, powered air respirators other than for artificial respiration, powered air devices, namely, powered air blower units which pump ambient air into a gas mask; powered air purifying respirators other than for artificial respiration; protective gas masks; structural parts for protective gas mask systems not for medical purposes, namely, hoses, filters, blowers and filter canisters; structural parts for all the aforesaid goods; self-contained breathing apparatus, masks, hoses, air tanks, filters and canisters; respirators, other than artificial respiration; filters for protective masks, respirators other than for artificial respiration and underwater breathing apparatus; plastic lenses for full face respirators providing ballistics protection, canisters for oxygen and other gases being parts of respirators other than for artificial respiration and SCBA breathing apparatus; canisters for oxygen and other gases, being part of respirators and breathing apparatus; electronic communications equipment, namely, transmitters, microphones, headphones, ear pieces, namely, ear phones, ear buds, voice projection units for use with protective masks, hoods and breathing apparatus; visual display apparatus in the nature of electric warning lights attached to enable the wearer to be aware; accessories for protective masks, hoods and breathing apparatus, namely, storage cases for protective masks, hoods and breathing apparatus; hydration tubes and liquid holders for use with protective masks, hoods and breathing apparatus not for medical purposes; parts for all the aforesaid goods