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 4140-01-525-7692
NSN 6150-01-557-6466
NSN 2925-01-567-7646
NSN 5950-00-259-3063
NSN 6240-00-824-2146
NSN 5930-01-146-4810
NSN 5930-00-535-4150
NSN 6110-01-633-9660
NSN 5915-00-383-1471
NSN 6145-01-476-5451
NSN 5965-01-100-5283
NSN 6620-01-464-3087