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 6145-01-312-7684
NSN 6220-01-400-0637
NSN 5945-01-150-8908
NSN 5950-00-828-0962
NSN 5935-00-116-1090
NSN 5950-01-164-8229
NSN 5920-01-534-3806
NSN 6130-01-541-8862
NSN 6685-01-391-2119
NSN 5905-01-023-2411
NSN 6145-01-020-8428
NSN 4140-00-432-0456