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 6135-01-088-4301
NSN 6110-01-116-3397
NSN 6685-01-023-4714
NSN 6650-01-068-3997
NSN 4140-01-361-5115
NSN 5920-00-997-0157
NSN 6220-00-111-3497
NSN 5945-00-788-0366
NSN 6620-00-296-6762
NSN 6220-00-823-4588
NSN 5835-01-597-4820
NSN 5855-01-053-0679