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 6110-01-543-3880
NSN 5915-00-959-5454
NSN 2925-01-460-1601
NSN 5835-01-104-1299
NSN 5998-01-634-0604
NSN 5990-01-316-0989
NSN 7035-00-205-1932
NSN 5965-01-597-6295
NSN 6620-00-517-6209
NSN 6620-01-395-5214
NSN 6620-01-224-1617
NSN 5990-01-320-1412