An item designed to be affixed to a base, forming a housing for a removable bearing or the bearing may be an integral part of the housing. It is used to prevent the admission of dirt and/or foreign matter, retain the lubricant and to position a shaft or the like.
door assy,sea valve left hand end item identification, zzzy criticality code justification, quality control in accordance with navships 0948-045-7010 material identification and control instruction for subsafe items reference number differentiating characteristics