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 4140-01-351-3892
NSN 6110-00-022-2555
NSN 5945-01-065-8125
NSN 5975-01-564-1851
NSN 5996-01-418-2802
NSN 6150-00-681-1664
NSN 6685-01-313-2744
NSN 6220-00-110-8921
NSN 6110-01-367-9454
NSN 5935-01-423-0579
NSN 5965-00-455-7581
NSN 6145-01-194-3086