Emergency Escape Respirators, Ammonia; Methylamine no checkout solvent resistant seal that will solvent resistant seal that will not tear or decay Parts disassemble easily even after extended service Reduces inventory costs – no need for large inventory of cut gaskets Durable cap with pocket clip for convenient storage Fast drying Heavy duty plastic barrel features ergonomic design for extended use Ink formulated for industrial strength usage Versatile tapered chisel tip makes 1 16" and 3 16" marks soft and flexible nose pads hold securely without pinching Wider nose clip fits a variety of facial types Silicone mouthpiece is more comfortable to wear over long periods Packed in sealable plastic bag (carrying bag sold separately 79BAG) Mouthbit respirators offer a quick and economical method to escape non IDLH emergency situations Large