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 6650-01-144-5351
NSN 5855-00-937-7709
NSN 5990-00-770-6975
NSN 6105-01-007-9915
NSN 5996-01-500-1830
NSN 5925-01-057-7559
NSN 5960-00-468-5353
NSN 5905-01-589-5380
NSN 6620-00-929-1188
NSN 6620-00-549-5644
NSN 5910-00-156-7293
NSN 5925-01-542-6451