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 5905-00-683-8096
NSN 6110-00-432-4417
NSN 6220-00-237-5964
NSN 6645-01-435-6373
NSN 5910-01-453-3597
NSN 5855-00-933-9978
NSN 5965-01-288-0721
NSN 5920-01-521-2320
NSN 6220-01-555-8332
NSN 6610-01-506-7887
NSN 5975-01-363-2905
NSN 5975-00-514-1136