Name: 3M Adflo Breathing Tube — Sound Dampening
Brand: 3M
SKU: SG-50W

Fits these systems

Systems this part fits, with compatibility status and evidence
System	Compatibility status	Evidence
3M Speedglas Adflo PAPR	T2 Manufacturer-listed part	[01] multimedia.3m.com manufacturer manual Table 2 "Components, Accessories, and Replacement Parts", section "Breathing Tubes", lists "SG-50W — Breathing tube – Sound dampening – 9100 series helmets. Required when used with 3M Adflo PAPR with HE Filter and OV/AG Cartridge and Welding Helmet 9100-Air, 9100 MP, and must be used with M-400 headgear when used with any 3M Adflo PAPR configuration" (page 20, bolded in source). Archived in repo: sources/3m-adflo-user-instructions-aug2025.pdf. 2026-07-06

Specifications

Technical specifications
Type	Sound-dampening breathing tube
Headgear compatibility	9100-series helmets
Required use — HE + OV/AG	Required when used with 3M Adflo PAPR with HE Filter and OV/AG Cartridge and Welding Helmet 9100-Air, 9100 MP
Required use — M-400	Must be used with M-400 headgear when used with ANY 3M Adflo PAPR configuration

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Listing ≠ endorsement. Confirm availability, approval status and source evidence before purchase or regulated workplace use.

Notes

IMPORTANT — mandatory-use SKU, not merely an option: per the manual's own bolded text, SG-50W is REQUIRED (not optional) whenever the Adflo HE particulate filter is combined with an OV/AG cartridge (15-0399-99 or 15-0499-99) on the 9100-Air or 9100 MP welding helmet, and it must ALSO be used with M-400 headgear in every Adflo configuration regardless of filter stack. Using SG-30W or SG-40W in either of those two situations would deviate from the manual's required configuration. Always confirm the exact approved combination against the current NIOSH approval label before assembly.

Record sources

Evidence — dated sources

[01] multimedia.3m.com manufacturer manual 2026-07-06