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 6645-00-658-7838
NSN 5960-01-654-4353
NSN 5925-00-304-3315
NSN 6650-01-526-8253
NSN 6110-00-575-9795
NSN 5835-01-378-6804
NSN 6240-01-440-2561
NSN 5895-01-458-4462
NSN 6320-01-054-3046
NSN 6145-01-417-2988
NSN 5910-01-415-5023
NSN 5960-01-411-5217