North F400 Noryl Ratchet Headgear Gray

Product Description

The NORTH F400 is a ratchet-adjusted headgear assembly designed to secure compatible respirator facepieces during use. Constructed from Noryl thermoplastic, it provides a stable, adjustable fit across a range of head sizes. The ratchet mechanism allows for quick, tool-free tightening and loosening, making donning and doffing faster in demanding work environments. This headgear is intended for use by industrial hygienists, safety professionals, and trades workers who rely on tight-fitting respirators for respiratory protection in environments with airborne hazards.

The F400 headgear is suited for use in industrial, construction, and manufacturing settings where respirator use is required under OSHA respiratory protection programs. It functions as a replacement or spare harness component, restoring proper fit and function to respirators that have experienced wear or breakage of the original headgear assembly. Installation requires no special tools and is performed by the end user or a safety equipment technician.

Key Features

• Ratchet adjustment mechanism for quick, precise fit without tools
• Noryl thermoplastic construction for durability and chemical resistance
• Gray color finish for easy identification and standard appearance
• Lightweight design at 1 pound to minimize wearer fatigue
• Replacement-ready component for field serviceability of compatible respirators

Compatibility

Designed as an OEM-style replacement headgear harness for compatible tight-fitting respirator facepieces that accept this style of ratchet headgear assembly.

Installation Notes

Installation of replacement headgear should be performed by a qualified safety equipment technician or trained end user following the respirator manufacturer's service instructions. Before replacing headgear, ensure the respirator is removed from service and cleaned per applicable protocols. After installation, a user seal check must be performed in accordance with OSHA 29 CFR 1910.134 before the respirator is returned to service. Do not modify the ratchet mechanism or headgear straps.