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 6145-01-173-1389
NSN 6620-00-980-0244
NSN 5965-00-781-3578
NSN 6620-00-933-3640
NSN 6650-01-555-3527
NSN 6645-01-609-7365
NSN 5999-01-463-2598
NSN 5905-01-649-7140
NSN 5996-01-024-8423
NSN 6105-01-263-3989
NSN 6220-01-350-3108
NSN 6145-01-523-3401