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 6145-01-504-8141
NSN 5905-01-334-5550
NSN 5930-01-499-1917
NSN 6130-01-607-6305
NSN 6130-01-004-8977
NSN 5999-01-401-5322
NSN 5998-01-486-0373
NSN 5910-01-342-6173
NSN 5855-01-601-8145
NSN 6645-00-409-2168
NSN 6220-01-157-2930
NSN 6145-01-470-1120