(a) All facepieces shall be equipped with head harnesses designed and constructed to provide adequate tension during use and an even distribution of pressure over the entire area in contact with the face.
(b) Facepiece head harnesses, except those employed on single-use respirators, shall be adjustable and replaceable.
(c) Mouthpieces shall be equipped, where applicable, with adjustable and replaceable harnesses, designed and constructed to hold the mouthpiece in place.
Title 42 published on 2012-10-01
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