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 5930-01-425-1352
NSN 5920-01-559-7554
NSN 6650-00-170-5095
NSN 6110-01-589-0441
NSN 5950-01-128-6771
NSN 6135-01-543-9686
NSN 6685-01-144-2107
NSN 5999-01-003-8461
NSN 6645-00-515-6148
NSN 5999-00-759-5862
NSN 5999-01-457-9670
NSN 7035-01-328-7448