30623 seal kit
2. Contaminant Protection Grease seals act as a first line of defense against contaminants. Dust, water, and debris can enter the bearing assembly and potentially lead to corrosion, pitting, and other forms of wear. By keeping these contaminants out, grease seals help maintain the integrity of the bearings.
wheel bearing grease seal



Photographers also rely heavily on partially silvered mirrors, particularly in the construction of camera viewfinders and certain types of filters. In single-lens reflex (SLR) cameras, a partially silvered mirror helps direct light from the lens to the viewfinder, allowing the photographer to see exactly what the camera’s sensor will capture. This feature enhances the photographer's ability to compose shots accurately and adjust settings based on the live view of the scene.
partially silvered mirror
