AO Safety Replacement Chemical Cartridge R51A (51475-00000) 2 replacement cartridges for AO Smith respirators, 95110 or 95115 NIOSH approved For protection against paint and pesticide vapors; solvent, glue and thinner vapors; dusts, mists, fumes and sprays DO NOT use these for protection against: Ammonia; formaldehyde; acid gases (like chlorine and hydrogen chloride); asbestos and lead dust or fumes; paints that contain isocyan...