Standard No.:	GB 31422.2-2025
English Name:	Hearing protective equipment—Part 2:Earmuffs
Chinese Name:	听力防护装备 第2部分：耳罩
Chinese Classification:	C73    Articles for labor protection
Professional Classification:	GB    National Standard
ICS Classification:	13.340.20 13.340.20    Head protective equipment 13.340.20
Source Content Issued by:	SAMR; SAC
Issued on:	2025-08-29
Implemented on:	2026-9-1
Status:	to be valid
Superseding:	GB/T 31422-2015 Personal protective equipment―General technical requirements for hearing protectors
Target Language:	English
File Format:	PDF
Word Count:	8000 words
Translation Price(USD):	240.0
Delivery:	via email in 1 business day

GB 31422.2-2025 Hearing protective equipment—Part 2:Earmuffs English, Anglais, Englisch, Inglés, えいご 1 Scope This document specifies the technical requirements, marking, and information to be supplied by the manufacturer for earmuffs. This document is applicable to all types of earmuffs designed to reduce noise and protect human hearing. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 12903 Personal protective equipment terminology GB/T 46342-2025 General test methods for hearing protectors ISO 4869-2:2018 Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn 3 Terms and definitions For the purposes of this document, the terms and definitions given in GB/T 12903 and the following apply. 3.1 hearing protective equipment hearing protector individual protective equipment used to protect hearing and prevent people from excessive noise stimulation 3.2 passive hearing protection mode of hearing protection that relies solely on product design and material types, without the use of electronic components, to provide external sound attenuation 3.3 earmuff hearing protective equipment consisting of cups (3.4) and other components, which protect hearing by clamping against the auricle or surrounding the auricle and fitting snugly against the head 3.4 cup cup-shaped component with certain sound insulation capabilities, mounted on the headband or cup supporting arm (3.5) of an earmuff (3.3), and typically equipped with a cushion (3.6) and a liner (3.7) 3.5 cup supporting arm arm-like component that ensures the earmuff (3.3) fits snugly around the auricle by pressing the cushion (3.6) via the cup (3.4), and is connected to the shell of head protective equipment (such as safety helmets) or eye and face protective equipment 3.6 cushion deformable component installed on the rim of the cup (3.4) Note: It is usually made of materials such as plastic foam, polyurethane memory foam, or silicone rubber, and is used to enhance the wearing comfort and seal of the earmuff. 3.7 liner acoustically absorptive material contained within the cup (3.4) 3.8 hygiene cover disposable protective layer covering the cup (3.4) Note: It is used to protect cushions from the effects of dirt, perspiration, cosmetics, etc. 3.9 headband component that ensures the earmuff (3.3) fits snugly against the ear by applying a specific headband force 3.10 headband earmuff earmuff (3.3) where the cups (3.4) are connected by a headband (3.9) 3.11 mounted earmuff earmuff (3.3) that can be attached, via cup supporting arms (3.5), to head or eye and face protective equipment for use

Contents Foreword i Introduction iii 1 Scope 2 Normative references 3 Terms and definitions 4 Classification 5 Technical requirements 6 Markings 7 Information to be supplied by the manufacturer Bibliography