Summary Information (click on this NSN number for detailed information: 5330-00-001-1994)
Plain Encased Seal, also referenced with federal logistics item name code 4214:
A pliable rubber, felt, leather, or composition ring-shaped element, split or solid; with or without spring or spreader, having a metal shell on all or a portion of at least two of the outer surfaces. it may be designed to be either bolt mounted or pressmounted between fixed and moveable parts to form a tight and effective seal by the pressure of the spring or spreader or the resiliency inherent in the element material. excludes packing with retainer.