Economyjp Official institution
Koken gas masks recalled over hard-to-tighten canister ring
Japan's Labour Standards Bureau has warned that some Koken gas masks have a canister ring that can be hard to tighten, which may prevent a proper seal with the filter canister. Koken Co., Ltd. is voluntarily collecting four covered products made between July and September 2026. Owners should contact their nearest Koken sales office.
This summary was generated by AI; the official source prevails.
What does it mean?
If you own one of these Koken gas masks, check the model name and production period. If it matches, contact the nearest Koken office so the company can collect it.
Who is affected?
Owners of the listed Koken gas mask models and the R-5 boxed set with replacement parts.