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 5910-00-887-1802
NSN 2925-01-471-3365
NSN 5905-01-250-8883
NSN 6650-01-199-0570
NSN 6105-01-327-4124
NSN 6650-01-352-7111
NSN 5935-01-235-8763
NSN 5985-01-500-4283
NSN 6135-01-388-2761
NSN 2925-01-508-4138
NSN 5975-01-378-2297
NSN 7035-00-546-2560