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 6130-01-400-6123
NSN 5945-00-233-5804
NSN 6130-00-109-6002
NSN 5925-00-851-0011
NSN 5945-00-639-9848
NSN 5965-00-815-2525
NSN 5910-01-440-6907
NSN 6320-01-162-5977
NSN 6610-00-609-6949
NSN 6610-01-566-4500
NSN 5835-00-227-7909
NSN 2925-00-580-4931