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 6145-00-382-6199
NSN 5985-00-375-1837
NSN 5998-00-824-3651
NSN 5925-00-840-4149
NSN 5930-01-429-9275
NSN 4140-01-266-4519
NSN 6130-01-415-8162
NSN 4140-01-362-8017
NSN 5996-00-065-5343
NSN 5920-01-109-6661
NSN 6610-01-436-2803
NSN 6145-00-286-9588