A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6135-01-338-8969
NSN 6150-01-014-5691
NSN 5950-00-435-1979
NSN 5975-01-484-9615
NSN 5998-01-359-5623
NSN 6240-01-426-5581
NSN 5855-01-400-1590
NSN 5990-00-434-0620
NSN 6130-01-632-5027
NSN 5895-00-586-1068
NSN 2925-00-567-7172
NSN 5915-01-083-4838