Keep your 3M™ Resusable Respirator well maintained and ready for use with 3M™ Resusable Respirator Nose Cup Assemblies. They are easy to fit and helps increase the effective service life of your 3M™ Reusable Respirator. Our replacement nose cups replaces damaged or worn face mask nose cups, and it’s specially designed for use with 3M™ Reusable Respirators.