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 6145-01-222-0907
NSN 6145-00-409-6844
NSN 5935-00-648-2319
NSN 5895-01-429-6998
NSN 6610-01-269-3070
NSN 5895-01-428-6836
NSN 6135-01-426-4157
NSN 5965-00-777-7037
NSN 5996-01-034-7616
NSN 6145-01-634-0388
NSN 5975-01-498-4076
NSN 6620-01-401-5356