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 6685-01-056-4861
NSN 5950-00-997-5829
NSN 5910-00-240-4451
NSN 6685-01-262-4847
NSN 5910-00-688-8702
NSN 6150-01-409-2858
NSN 6145-01-111-7713
NSN 5950-00-257-9517
NSN 5835-00-998-5757
NSN 6130-00-915-3159
NSN 6240-01-238-5374
NSN 5960-01-319-6735