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 5895-00-447-0550
NSN 5920-00-529-0618
NSN 6135-01-184-0727
NSN 6130-01-457-6897
NSN 5996-01-641-0124
NSN 5965-01-564-6654
NSN 5915-01-543-9217
NSN 5835-00-302-5296
NSN 2925-01-446-6523
NSN 5930-01-267-3974
NSN 5925-01-392-4785
NSN 6150-01-242-4738