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 5935-00-916-2309
NSN 5945-00-139-4392
NSN 5895-01-102-1230
NSN 4140-01-581-2051
NSN 5975-01-406-4249
NSN 5945-01-535-7037
NSN 6685-00-316-5178
NSN 6220-00-646-8210
NSN 6240-01-527-6251
NSN 6650-01-399-0328
NSN 6105-01-112-9483
NSN 5935-00-691-0444