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 6135-01-367-6203
NSN 5835-00-378-1429
NSN 2925-00-397-4781
NSN 6135-00-913-2062
NSN 5855-00-004-0904
NSN 6620-00-513-0738
NSN 5985-01-468-5964
NSN 5999-01-592-9190
NSN 5835-00-656-7317
NSN 6150-00-246-6673
NSN 6685-01-017-2797
NSN 5945-00-726-5021