501 Filter Retainer
. This item is a 501 Filter Retainer used for respirator masks.
. It is designed to hold particulate filters (like the 5N11) securely onto gas and vapor cartridges 6001
. The retainers are translucent white and typically come in pairs.
. Material : Molded from durable, rigid polypropylene plastic which resists degradation from chemicals and impact.
. Color : Translucent white, allowing you to easily look through it and verify that a filter is properly oriented and installed inside.
. Reusability : Unlike the disposable pads it holds, the retainer itself is fully reusable and should only be replaced if it cracks, warps, or fails to snap securely.