Electroless nickel coatings have become popular because of their combination of corrosion and wear resistance and smooth polished appearance. Some forms include a PTFE infusion to aid in non-stick properties. Most forms of this coating are FDA compliant as well.
Non-metal materials including plastics, polymers, and fillers are increasingly being used inside of mechanical drive components, guides, bearings, fasteners, and more. They are utilized because of their cost, weight, and ease of manufacture. Many solid plastics, such as injection-molded bearing inserts, present drawbacks in washdown applications. Most of these will absorb liquid, causing the components to swell and increase the potential for binding and catastrophic failure.
To learn more about linear motion design and optimization for washdown, download our Linear Motion Design for Washdown Applications white paper.