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The ST-100X is a full-face respirator built around a 40mm NATO canister mount. It ships with one P-D-1 A2P3 R canister for organic vapor and particulate protection, and it accepts other 40mm NATO canisters for different hazards. The silicate face shield is impact-tested and gives a wide 78% panoramic view, while the natural rubber faceseal and 5-point elastic harness are made for long wear in harsh conditions. It suits preppers, industrial and lab users, and anyone who wants a reusable mask with a standard canister thread. Against cheaper disposable half-masks it offers better sealing and a full face seal, but it is heavier and needs canister changes.
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Owners rate it highly, with 4.8 out of 5 from 75 ratings. They praise the seal, the wide view and the sturdy build. Some note the weight and heat of a full-face design.
The ST-100X is a full-face gas mask with a convex face shield made of silicate. The shield has been impact-resistance tested and gives a wide, panoramic field of view. The mask has an anti-fog design for hot and cold weather and a voice box diaphragm for communication while it is worn.
The faceseal is made of natural rubber, which forms a soft seal that keeps its shape. A 5-point adjustable harness stretches over the head and can be secured quickly. The mask has one 40mm NATO center port and comes with a P-D-1 A2P3 R 40mm NATO canister. It can also be used with other 40mm NATO canisters.
It is intended for tactical and survival use, firefighting and wildfire smoke, and hazardous environments including nuclear, biological and chemical scenarios.
