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 5930-01-381-2523
NSN 6130-00-884-6161
NSN 5996-01-298-2133
NSN 5965-01-080-4021
NSN 5990-00-965-7786
NSN 6135-01-163-0332
NSN 6145-00-607-1892
NSN 5925-01-566-0561
NSN 6150-00-227-6651
NSN 5985-00-578-7740
NSN 5910-01-547-6581
NSN 5920-00-100-7219