9101P - Fibre-Metal 9101P Plastic Lens Retainer for 2x4 Helmets

Product Overview

The Fibre-Metal 9101P is a specialized plastic lens retainer designed to secure the filter plate and cover lens assembly within the bezel of specific Fibre-Metal welding helmets. Manufactured from high-grade, heat-resistant thermoplastic, this component is engineered to withstand the thermal stresses and UV radiation typical of industrial welding environments without warping or becoming brittle prematurely. It serves as a critical safety component, ensuring that the passive lens stack remains immovable during operation, thereby maintaining the necessary optical protection and impact resistance required by safety standards.

Compatibility and Engineering

This retainer is precision-molded to fit the standard 2-inch by 4.25-inch (2x4) lens opening found in Fibre-Metal's most enduring helmet series. Specifically, it is the OEM replacement part for the 110 Series (commonly known as the Pipeliner), the 906 and 910 Series (Tigerhood), and the 990 Series. The 9101P utilizes a friction-fit and snap-lock mechanism that engages with the interior molding of the helmet shell or lift-front bezel. This design eliminates the need for auxiliary fasteners or tools, streamlining the maintenance process for safety managers and equipment technicians.

Operational Benefits

Unlike metal retaining springs which can sometimes deform or conduct heat, the 9101P plastic retainer provides a consistent, non-conductive barrier. Its black matte finish also aids in reducing internal glare within the helmet assembly. By ensuring a tight seal between the lens and the helmet shell, it prevents "light leak"—the intrusion of arc flash around the edges of the filter plate—which is essential for preventing welder's flash and long-term ocular damage. Regular inspection and replacement of the lens retainer are recommended as part of a comprehensive PPE maintenance schedule to ensure total system integrity.