Atmosphere-supplying respirator (ASR) parts and accessories support and maintain the function of ASRs. Replacement parts are necessary components that should be replaced when they are no longer working properly or become damaged. Examples include, but are not limited to, gaskets, screws, pistons, o-rings, and washers.

Other parts and accessories include ASR regulators and reducers that regulate the flow of air to respirator head pieces; and ASR hoses and fittings that enable clean, breathable air to be delivered to hoods, helmets, or full facepieces.

Accessories are optional enhancements of ASRs based on wearer preference or environment. Examples include, but are not limited to, variations of lenses and lens covers, climate control tubes, flow control valves, and caps.

Regulatory compliance details can be obtained at the individual product level.