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 6650-00-211-6302
NSN 6650-01-270-4512
NSN 6105-00-917-7453
NSN 5965-01-528-6453
NSN 5990-01-544-4360
NSN 6145-01-461-8062
NSN 6150-00-299-0763
NSN 6620-01-025-1443
NSN 5965-01-399-8454
NSN 4140-00-171-1387
NSN 5975-01-250-5493
NSN 6240-00-816-4808