3M Versaflo M-447 Flame-Resistant Outer Cover Web for RM407 Facepiece

3M Versaflo M-447 Flame-Resistant Outer Cover Web for RM407 Facepiece

The 3M Versaflo M-447 flame-resistant outer cover web is a replacement part designed specifically for Versaflo Series M facepieces, including the facepiece RM407. It is intended for construction, demolition and grinding environments where spark projections or flame hazards are present. The flame-resistant design provides an additional barrier against light thermal risks while maintaining the comfort of the PAPR system.

3M manufacturer code: 7100289958, model: M-447

Made in the USA, the M-447 cover web complies with NIOSH requirements when used as part of a complete powered air-purifying respirator system. Sold as a single unit, it installs tool-free directly onto the Series M facepiece. Its compact format facilitates transport and storage in consumable inventories on job sites.

Designed for quick replacement during work operations, the M-447 differs from the M-448 by its flame resistance, a critical feature in environments where electrical arcs, molten metal projections or flash fires are possible. It is compatible with TR-300 and TR-600 PAPR systems in the Versaflo lineup when a Series M facepiece is used.

Advantages

Sectors and situations where this cover web is required

• Construction and demolition: Demolition of metal structures or reinforced concrete generates abrasive projections and occasional sparks. The M-447 cover web protects the main facepiece while resisting incidental flames.

• Grinding and welding: Grinding of ferrous and non-ferrous metals produces high-temperature sparks. The flame resistance of the M-447 is appropriate for these environments where the standard M-448 cover web would not suffice.

• Electrical work: Workers exposed to electrical arc hazards benefit from the flame resistance of this cover web to complement their arc flash protection equipment.

• Petrochemical industry: Environments with flammable vapors or open flames require flame-resistant PPE on all exposed components.

Protection and compliance

The M-447 cover web is NIOSH-approved when used as part of a complete powered air-purifying respirator system. It maintains the assigned protection factor of 1,000 of the Versaflo Series M system, making it a reliable component for demanding industrial environments.

Comfort and ease of maintenance

The cover web replaces quickly without tools, reducing downtime on job sites. It is lightweight and adds no significant load to the equipment. Regular replacement helps maintain system hygiene and extends the service life of the main facepiece.

FAQ - Frequently Asked Questions

What is the difference between the M-447 and the M-448?

The M-448 is an extended-durability cover web designed for general construction work and metal handling. The M-447 adds flame resistance, making it mandatory in environments where sparks, molten metal projections or electrical arc hazards are present. If your application involves grinding, welding or electrical work, the M-447 is the appropriate choice.

Is the M-447 compatible with all Versaflo Series M facepieces?

Yes, the M-447 cover web is designed to be compatible with all 3M Versaflo Series M facepieces. It installs directly onto the RM407 and other Series M models. Before installation, verify that the facepiece is clean and in good condition to ensure optimal system sealing.

How often should the M-447 cover web be replaced?

Replacement frequency depends on usage intensity and working conditions. A cover web showing visible signs of wear, heat discoloration, stiffness or deformation must be replaced immediately. For daily use in construction or grinding environments, regular replacement per 3M recommendations ensures maintenance of the system's protection factor.

Suggestions

In construction, grinding and demolition environments where this flame-resistant cover web is used, other personal protective equipment is required. Gloves Superior Touch Dyneema PU-coated (GS13SXGPU) provide cut protection for metal handling. Glasses Virtua Max clear lens (YA11514) protect eyes during grinding operations. Earplugs E.Z. Fit (OA1208) provide hearing protection against construction noise. The arc flash ARC 2 coverall (V7705) and nitrile Zenith (GZ13POFN) complete the equipment for work with thermal and electrical arc risks. See "Accessories" at the bottom of the page.

For direct Versaflo Series M system accessories, the accessory RM407 directly receives this cover web. The RM206 and facepiece RM307 complete the set for comprehensive respiratory protection.

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