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 5960-01-658-9538
NSN 6130-01-307-9606
NSN 6135-01-450-1269
NSN 5920-01-435-8597
NSN 6105-00-721-2433
NSN 5975-00-751-8968
NSN 5945-01-247-6155
NSN 6110-01-549-8796
NSN 6650-00-486-7924
NSN 5945-01-465-7165
NSN 5905-01-512-2297
NSN 6620-01-601-4314