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 5920-00-917-1869
NSN 5835-00-350-3703
NSN 5998-01-602-0942
NSN 6110-01-190-3161
NSN 5950-01-622-4532
NSN 5925-00-901-4931
NSN 5990-01-429-6211
NSN 5965-00-959-4910
NSN 5945-01-420-3069
NSN 5999-00-570-1380
NSN 5920-00-267-3109
NSN 6620-01-476-7355