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 6320-00-115-0883
NSN 5950-00-018-8235
NSN 5975-01-483-2882
NSN 5905-01-034-7964
NSN 6650-01-450-0790
NSN 5965-00-711-6419
NSN 5999-00-556-9892
NSN 6645-00-857-0410
NSN 5975-01-599-7092
NSN 5920-00-019-9044
NSN 5925-01-596-2796
NSN 5855-01-608-2417