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 5935-00-867-3439
NSN 5990-01-157-0441
NSN 4140-00-910-3425
NSN 5996-00-457-0575
NSN 5905-01-634-0595
NSN 5930-00-617-6715
NSN 6110-00-646-9079
NSN 6645-01-188-5237
NSN 5996-01-363-6037
NSN 5930-01-326-6819
NSN 5905-01-512-2297
NSN 5998-01-064-2903