Add a layer of protection to your model Z5850 floor sink with Zurn’s coated rim guard (Part no. Z5850-RG). Because they're positioned on the floor and used for filling and emptying large, heavy containers of water and cleaning chemicals, mop sinks face a lot of abuse. When installed on a floor sink, the rim guard protects it from dings and scratches, extending its lifespan. When you need an accessory or replacement part for repair or maintenance of a fixture, trust Zurn for genuine, reliable parts.