The Sellstrom 90335 replacement dust cover protects against dirt and debris, and is used with the Sellstrom Gravit-Eye self-contained 16-gallon emergency eyewash station. The dust cover is made of clear vinyl to allow the station and its instructions to be viewed, and fits over the entire front surface of the eyewash station. It measures 20 x 17 inches (H x W). (H is height, the vertical distance from lowest to highest point; W is width, the horizontal distance from left to right). It has a pull tab at the top for quick removal in an emergency. The 90335 is an accessory for use with the Sellstrom Gravit-Eye eyewash station, which provides eye protection in workplace environments where hazardous chemicals or materials are present.

Eyewash stations provide for emergency flushing of the eyes to remove chemicals or materials that can cause injury. They are placed near potential eye hazards in workplace environments for quick access, and can be either plumbed devices that draw tap water from a facility's plumbing or self-contained units with a supply of gravity-fed flushing solution that can be wall mounted or placed on mobile stands or carts for portability. Eyewash stations have a pair of nozzles that direct the flushing fluid upward at both eyes simultaneously, maintaining a constant flow rate and stream height. The flushing fluid used in portable stations is typically a preserved, physiological saline solution that must be periodically replaced. Eyewash stations are required by government agencies responsible for occupational safety, such as the Occupational Safety and Health Administration (OSHA), and are found in industrial facilities, construction sites, and hospitals, among others.

Sellstrom manufactures personal safety products. The company, founded in 1923 and headquartered in Schaumburg, IL, meets International Organization for Standardization (ISO) standard 9001:2008.