MSA® Bayonet to 40MM NATO (RD40x1/7) Adapter

thingiverse

Human: MSA Bayonet to 40MM NATO (RD40x1/7) Adapter ======================================== This innovative design for a MSA bayonet to 40MM NATO (RD40x1/7/DIN) gas mask thread adapter aims to bridge the gap in compatibility between commercial off-the-shelf (COTS) filters and other manufacturers' respirators, especially during times of PPE shortages. This adapter is designed to work seamlessly with any RD40x1/7 filter canisters. If you don't have access to 40MM (RD40x1/7) filters, consider using these adapters to step down to COTS filter cartridges from the following companies: 40 MM NATO to MSA Bayonet Filter Adapter https://www.thingiverse.com/thing:4265715 Alternatively, search Thingiverse for DIY filter cartridge designs that can mate to other major manufacturer respirators. Part Description: MSA_BAYONET_TO_40MM_NATO_ADAPTER_GEN1.stl Initial model release, requires o-ring or gasket inside female side 40MM NATO threads to ensure proper seal. Disclaimers/Risks: 1. Use Proper Gaskets - Requires 40 mm OD gasket or o-ring on the underside bayonet to ensure proper seal maintained between cartridge and threads. 2. Perform Proper Negative Pressure Test - Follow established SSPs for further guidance, but in general, wear your respirator, adjust straps until taught against face, ensuring no obstructions around the periphery of the seal against face. Exhale deeply, cover inhalation ports, and inhale deeply. The mask should suck tightly against your face without any air leakages. 3. Use At Own Risk - Temporarily Solution Only Until Supply Chain Normalizes - 3D printing materials are not resistant to many solvents, are water soluble, and degrade when exposed to chemicals, heat, and UV/sunlight. Dev. Notes: 04/14/2020 - Initial model release 06/03/2020 - Revision applied to completely remove overhand support from the wrenching ears, and chamfers updated accordingly.