3m Exhalation Valve,Nylon/Silicon,PK10 6583

Adjustable Head Harness Assembly Material Nylon/Silicon Series Rugged Comfort 6500 Size Universal For use with 6500 Series Half Mask RespiratorYou may also like 3M Hd/Vlv/Brkt Asy-3/8Npt Bh3-Npt (Bh3-Npthead) 6240807 - Genuine OEM Replacement Part.