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 2925-01-554-5246
NSN 5895-01-227-2651
NSN 5960-01-437-3313
NSN 5998-00-891-2790
NSN 6685-01-230-7360
NSN 5999-01-316-0541
NSN 6150-00-842-9127
NSN 5998-01-512-3889
NSN 5985-01-504-5227
NSN 4140-01-073-6199
NSN 5925-01-548-9668
NSN 5910-01-325-8391