501 | 3M Particulate Filter Retainer | Pair

The 3M 501 Particulate Filter Retainer is designed to securely hold compatible 3M particulate prefilters in place over 3M gas and vapor cartridges. When used as part of a complete 3M reusable respirator system, the 501 retainer allows users to add particulate filtration while helping extend the service life of underlying cartridges.

This retainer snaps easily over compatible 3M bayonet-style cartridges and is commonly used with 3M 5N11 N95 prefilters and other approved particulate prefilters. It is suitable for painting, sanding, grinding, and general industrial applications where both vapor and particulate protection are required.

Key Features

• Designed to secure particulate prefilters over compatible 3M cartridges
• Enables combined gas, vapor, and particulate protection when used correctly
• Compatible with 3M bayonet-style gas and vapor cartridges
• Commonly used with 3M 5N11 N95 particulate prefilters
• Easy snap-on installation for quick assembly
• Supports extended cartridge service life
• Suitable for use with 3M 6000, 6500, 7000, and FF-400 Series respirators

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