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 5960-00-769-7629
NSN 6145-01-149-6295
NSN 6650-01-049-1881
NSN 5935-01-230-3660
NSN 5935-01-037-6195
NSN 5905-00-812-3795
NSN 6145-00-812-8832
NSN 5975-01-268-1529
NSN 6105-01-583-9027
NSN 6220-00-800-4498
NSN 6320-01-495-1244
NSN 4140-00-505-1684