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 4140-01-024-5862
NSN 6135-01-171-9299
NSN 4140-00-481-3858
NSN 6105-01-317-0841
NSN 5835-00-554-0399
NSN 5975-01-030-4841
NSN 2925-00-225-5386
NSN 2925-01-154-2949
NSN 6685-01-243-0372
NSN 5996-01-621-7893
NSN 5910-00-279-1950
NSN 5990-01-575-3275